Malicious PDF — malware analysis report

Static analysis result for SHA-256 de734e010734f4e2…

MALICIOUS

PDF

48.0 KB Created: 2020-08-12 08:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ae70a6b94ec3d967e36b147a0f7b91c SHA-1: afc0d8786ba93e26c362e0e275db21bf5cc2c050 SHA-256: de734e010734f4e289bc29f333407ee8f0f5cc068339f5519885f608bbecfe89
202 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users into downloading more PDFs, with one primary link redirecting to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the initial URL leads to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the primary malicious URL. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=design+methods+in+architecture+pdf In PDF document text
    • http://files.power-up-potential.com/uploads/1/3/1/3/131379875/foludajijeduj.pdfIn PDF document text
    • http://xuvoda.humblegritsales.com/uploads/1/3/0/7/130739289/mawodapuxoridum_rozaj.pdfIn PDF document text
    • http://jemas.1stonthreads.com/uploads/1/3/1/4/131438177/xexubolegatowe.pdfIn PDF document text
    • http://files.pentecostalcchurch.com/uploads/1/3/1/4/131437402/widajewitol_nadelirokilax.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/1/0432/6588/4323/files/50582971535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/2695/8747/files/transistor_amplifier_circuit_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6590/1210/files/zaxaruzaladulul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/rawemevolewutexofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/morexizovigun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9656/4131/files/18589502317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2670/0696/files/fifavixasuvalufotepuziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/55864873889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/monografia_sobre_meio_ambiente.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tizerosotusalasebix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/zelavidisalajulex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0811/4340/files/jisivabodavokibifativa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6844/9180/files/kivavikemudazitonikesagut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8855/9780/files/69357743257.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E58 5416 bytes
SHA-256: 3adabff876b995c7c850cff82a37369e03cb9acc5dbaf563e53af3e3aedc42c3
font_01_sfnt_off00008092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8092 10760 bytes
SHA-256: 8050b3e479be8d7f9f91cdb401558c419d94a6d40c634f5efbb455e8cbf4eed2
font_02_sfnt_off0000a4b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B8 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34