Malicious PDF — malware analysis report

Static analysis result for SHA-256 a806eb12dbc63a1f…

MALICIOUS

PDF

55.1 KB Created: 2020-08-24 02:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a2ccd83f107e32cc556c8ab6afacd2c7 SHA-1: 02491c5b7c8ce9fe03282df49e802cbf4ce69b8d SHA-256: a806eb12dbc63a1f02c9cadb7125e151c00492220d4bc716cdc616e2903f537b
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be part of this link farm. This suggests the primary attack pattern is to lure users through a link farm to malicious content. No scripts were extracted, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=battery+doctor+latest+apk In PDF document text
    • http://files.icellw.com/uploads/1/3/1/4/131406140/baradet.pdfIn PDF document text
    • http://panigat.oceansidecove.net/uploads/1/3/1/4/131453060/59305cbc3d4cc7.pdfIn PDF document text
    • http://files.theautistix.com/uploads/1/3/0/7/130740127/liregozomukofa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6179/5230/files/formwork_carpenter_camp_jobs_canada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6056/0025/files/5828112061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4526/5318/files/loxina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5475/0106/files/81784188782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3627/files/logugajegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5253/8787/files/sotemepatakimetaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7451/8178/files/20251195427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/43886506346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0200/2584/files/38828737998.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6410 4916 bytes
SHA-256: bd9c8a5ef5c7c6c5bcc0256f706e81f7c4440694fb0a62550b141f7bc013c8ad
font_01_sfnt_off000074e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E4 4572 bytes
SHA-256: e9f668ce11f9fd16e8103d15cbc36205b71a5213dcc32721ea3f5e0689804827
font_02_sfnt_off0000865e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x865E 10908 bytes
SHA-256: e4f1b430d3c196c0e950097f7f41e6e872483423f6ed71aa50beb331cfd71a29
font_03_sfnt_off0000aba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABA9 16232 bytes
SHA-256: 145a98d2f60efd994bbcb4cebefe096a3a0ada86ba18ffc3f39073695cedf924
font_04_sfnt_off0000c0b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B3 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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