Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe787f3e3d5723f7…

MALICIOUS

PDF

52.0 KB Created: 2020-08-12 10:25:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8bddabb714dfb1f4d5a8dd9ef98814d SHA-1: d8589ae408b9709bc0dfd1f77a90b8414b70cf21 SHA-256: fe787f3e3d5723f7d33a8b6335dac0cf764780501e37bdca50505af0e14bfa11
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The document body, though heavily obfuscated, contains text that appears to be a lure related to business decision-making, combined with the wkhtmltopdf generator information. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to distribute the malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=the+buyer+decision+process+pdf In PDF document text
    • http://files.energizepersonaltraining.com/uploads/1/3/2/6/132680932/4092752.pdfIn PDF document text
    • http://files.laureatetranslation.com/uploads/1/3/0/8/130814308/7542172.pdfIn PDF document text
    • http://benov.autumnmoonhaiku.com/uploads/1/3/2/6/132681579/6006202.pdfIn PDF document text
    • http://files.algomaumc.org/uploads/1/3/0/7/130775698/gilofo.pdfIn PDF document text
    • http://files.fragletsart.com/uploads/1/3/1/0/131069898/5709302.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/1/0438/7130/5896/files/jatuwanunubek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/78230883448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27247465441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9097/6673/files/81403207284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9867/6131/files/aptitude_test_for_bank_exam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/diccionario_biblico_cristiano_reina_valera_1960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6521/3079/files/jonimejekeman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8589/7627/files/pifepuxakodimekif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/vurujig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/test_your_english_vocabulary_in_use_advanced_second_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/newifogipibifalusokaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2462/1473/files/70632593282.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 5

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_off00008e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E06 5192 bytes
SHA-256: 595e12aacabdb0f20ce82a54e3776f19fcc4887c964386ae75cf33f109c189aa
font_01_sfnt_off00009fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FA3 10412 bytes
SHA-256: 3db74573389b7d68828bd62124f27d5e02da0b878208c68fcac1f206ac59ba77

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