Malicious PDF — malware analysis report

Static analysis result for SHA-256 afca6e9439949690…

MALICIOUS

PDF

93.0 KB Created: 2020-08-20 23:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e6a59744e89095b4c7b2bb41ca9f369 SHA-1: b31381892d908e579a1262741208cd1171dcb132 SHA-256: afca6e9439949690a0e4ff8e17daf8e4599c72b9fa02b451232ecaa595657c98
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, includes the same URL and a reference to 'biodata form meaning in telugu', suggesting a lure. The PDF also exhibits a link farm behavior, with numerous external links, many pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=biodata+form+meaning+in+telugu In PDF document text
    • http://files.devangaloka.com/uploads/1/3/1/6/131606118/5218812.pdfIn PDF document text
    • http://files.susanarondon.com/uploads/1/3/1/4/131437276/17a9e92.pdfIn PDF document text
    • http://lilixejat.douglaspiercefilm.com/uploads/1/3/1/6/131606347/zebabosigara-zaxen.pdfIn PDF document text
    • http://files.earthwarriorsfestival.org/uploads/1/3/0/7/130740211/9285411.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/perdon_chiquis_rivera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/zovep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/barefoot_investor_2020_audible.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/elementary_geometry_for_college_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0281/4876/files/definitions_of_history_by_different_authors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/rovowigujiwusegegot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9820/0481/files/61159640761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3777/6289/files/human_body_systems_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3099/4326/files/dezafarulowemotiwuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/10412431759.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 10

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_011_off0001210d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1210D 18176 bytes
SHA-256: cf01bc0f4988446dccedefc74b2e18f75f5a4db52223d49ae4d5ad8e3f5c05f1
font_00_sfnt_off00006ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF1 5588 bytes
SHA-256: 40ed7a59e93a39a2357a6714e82246a7d8382393c541a7d084f33d2bd6126fa4
font_01_sfnt_off00008281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8281 5096 bytes
SHA-256: ef152952b55a00000d4d6e1f4b1828fa3e423f13a2ad231b81fac2308c23dd7b
font_02_sfnt_off000093bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93BD 2656 bytes
SHA-256: c206ac4eca120f096112d408dff6b33a2f721090936d80486df636e1cd240fde
font_03_sfnt_off00009ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EC1 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_04_sfnt_off0000aa22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA22 2328 bytes
SHA-256: 3702365b3034b9d7945da23b991b5e2ac3f8bb06d1ba3be7e5ba1b5d8dd48c9f
font_05_sfnt_off0000b4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4DA 22960 bytes
SHA-256: 9a4e9969aa2d8c23b6a9475a8eea51ef1a8a2f45d98f611bda37589bd194c8c5
font_06_sfnt_off0000e835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE835 6640 bytes
SHA-256: eca62b72654736461a635ba366d09d794777fd95c58152d2b251becdfce657e0
font_07_sfnt_off0000f9d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D2 11608 bytes
SHA-256: ebd7a73d6a0a09292a79e726cfa0c3f05ffbc5a8b3fcd7cb740a033e836fd4bf
font_09_sfnt_off00013dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DDA 12172 bytes
SHA-256: e245142c558da01b4f3e913504f8d3d26956bc7bd29557ec3b43d4f8e66c967d

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