Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3ea77abdcc28708…

MALICIOUS

PDF

59.7 KB Created: 2020-08-11 19:16:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97cac1a623909e328d8801c0239a77c7 SHA-1: b5fc4aca5091550954169ba5d107999438ba34cc SHA-256: b3ea77abdcc287089b6f6d48ce1f105739a272a16cb3ec2d2f524f9fc07d1333
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.cc'. Additionally, it exhibits a PDF link farm pattern, with numerous links pointing to external PDF files, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be luring users to malicious sites via deceptive links within the document.

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.cc/pify?keyword=diziler+%25C3%25A7%25C4%25B1km%25C4%25B1%25C5%259F+sorular+pdf In PDF document text
    • http://files.josefjakobs.com/uploads/1/3/0/7/130739726/pafofoxero-lidilin-pibupijizofo.pdfIn PDF document text
    • http://gefeliv.ceciliatueros.com/uploads/1/3/1/4/131407406/100520037c32d18.pdfIn PDF document text
    • http://files.solitlife.net/uploads/1/3/2/6/132681851/pisinoxufu.pdfIn PDF document text
    • http://files.superstarbooks.com/uploads/1/3/1/4/131452840/vazisosiwe-kuxabu-sejinaxowe-wabeputikulonik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8497/2183/files/47462960571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/17287033610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7131/5876/files/addressing_modes_in_computer_organization_with_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/negojugon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/abyat_e_bahoo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/lonely_planet_greece.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9657/0024/files/66410156144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/english_speaking_tips_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6682/6656/files/troy_bilt_5500_watt_generator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5667/6507/files/zubadizuxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1243/7662/files/gafamesizefujariga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0737/7561/files/48665343213.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFE 2884 bytes
SHA-256: ebc0c66205eecaa15b97408e97b4ca266c1ef79c221d6a066ab8c4dd73ae161d
font_01_sfnt_off0000883d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x883D 5760 bytes
SHA-256: 3f9d20a96db6030a3a4a7d7bd4d07cb5e1fd10719fee175f1d9dbfc48d666f94
font_02_sfnt_off00009b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B1F 16252 bytes
SHA-256: 8674c445b60f4ce330468b76a84115a3a0426d779ade29853e74ae71abfcead0
font_03_sfnt_off0000ca04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA04 16060 bytes
SHA-256: 660d05b38fea380e8cc13f4a5a7db764e9bd2a20a73145a73af50c118749f22b