Malicious PDF — malware analysis report

Static analysis result for SHA-256 37ef7cd4f63915a6…

MALICIOUS

PDF

34.0 KB Created: 2020-08-23 01:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e31356d7672fb75f20d9d308a071b5c8 SHA-1: e4be9c10a585c7db3cf33b323b854e9078c2886f SHA-256: 37ef7cd4f63915a66f42dbe70e16b2a82df9d7a7044c5b738e6fb150d935f604
202 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=admin+law+agpalo+pdf'. Additionally, another critical heuristic indicates a PDF link farm, with 'https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88065476392.pdf' being the first URL in this farm. The document body, though heavily obfuscated, contains the same malicious URL. These findings suggest the primary goal is to redirect the user to a malicious site, likely for further exploitation or phishing.

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=admin+law+agpalo+pdf In PDF document text
    • http://files.whistlingfrogresort.com/uploads/1/3/2/6/132681002/masaberilanimubaloji.pdfIn PDF document text
    • http://siweb.carolmeadsart.com/uploads/1/3/1/4/131453960/40bac6d1884291b.pdfIn PDF document text
    • http://files.albertsfamousmexicanhotsauce.com/uploads/1/3/1/4/131406258/85c0132160.pdfIn PDF document text
    • http://files.seaofqihealing.com/uploads/1/3/2/6/132681783/465718c2f.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/1/0433/0687/7080/files/88065476392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8252/2528/files/auberge_de_l_ill_illhaeusern_formule_jeune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2060/5848/files/automatic_car_parking_system_project_abstract.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0097/7829/files/bujodoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0061/7381/files/mimozadipedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3786/7680/files/wufajipomejijodulupija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3754/files/8856256346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/livemuniwuturapezujimugiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/9601/5773/files/ff8_remaster_guide_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3664/5275/files/pukunaget.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4810 5168 bytes
SHA-256: 80db661b776ad0a6b102feb1619c137a5e58966711fc71feede022838dc1c781
font_01_sfnt_off000059a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59A4 9992 bytes
SHA-256: e66a9bde7db98d441462f3f084e83f574cf582339bdb948338f22f668cd2922f

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