Malicious PDF — malware analysis report

Static analysis result for SHA-256 e91fda24d7f45e3d…

MALICIOUS

PDF

52.2 KB Created: 2020-07-16 05:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 772d90167ad92daab3fa4ebe3c4f13e0 SHA-1: b32dabd75a36188acb21a4f639ce2bcc40fb2e93 SHA-256: e91fda24d7f45e3d540e55445e6dc8c64f374df22ab787ddc985c5c7292d52f5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains text that appears to be a lure for Oromo language speakers seeking a PDF. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to increase visibility and traffic to malicious sites.

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.com/wb?keyword=kitaaba%20seenaa%20afaan%20oromoo%20pdf In PDF document text
    • http://files.learningslowly.co/uploads/1/3/2/6/132682119/4655254.pdfIn PDF document text
    • http://files.bodiicore.com/uploads/1/3/0/7/130740363/09ce21731e2027c.pdfIn PDF document text
    • http://files.lauriebenningroberts.com/uploads/1/3/1/4/131438002/a2d488.pdfIn PDF document text
    • http://files.keepmaryoutofthekitchen.com/uploads/1/3/0/9/130969298/621ef3a12.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/1/0427/7701/8524/files/65605057235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7356/7901/files/zotodusimofebewatimilivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kiwovanigefuminif.pdfIn PDF document text
    • https://bafupidaruf.files.wordpress.com/2020/07/sejawovolebutowufuxi.pdfIn PDF document text
    • https://fewakiw.files.wordpress.com/2020/06/47939193690.pdfIn PDF document text
    • https://jodopeku.files.wordpress.com/2020/07/80055469440.pdfIn PDF document text
    • https://diworolev.files.wordpress.com/2020/07/bisovoto.pdfIn PDF document text
    • https://bizusiwe.files.wordpress.com/2020/07/repetabuzexopib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bisadugizutojaririxenudep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/20908823581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/38943969275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5887/8872/files/jovaxusen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/99674557518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lekerumukin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jezimix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4292/9821/files/vetadezorubukiramigiribi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E72 5052 bytes
SHA-256: cabe12777aea9fe4206acb768e0c3e2d457d942d389ce4077bfd424c6f92cad0
font_01_sfnt_off00007f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F76 14164 bytes
SHA-256: 746c3437c7d10af52465ab4f6548eb9e5551602b697233ebe4e872de6388fd92
font_02_sfnt_off0000ab55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB55 16316 bytes
SHA-256: 71012109155a9b3f3db5e6834c7b8801c285084f12c4c29c13c651ef04528056