Malicious PDF — malware analysis report

Static analysis result for SHA-256 1289e079aaa52bb4…

MALICIOUS

PDF

41.8 KB Created: 2020-08-19 00:09:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 367c7b90f1e3977a9a5e06dcfe254adc SHA-1: a37b6913ff2c7bcd5f528fc2816e84ae1191c8cc SHA-256: 1289e079aaa52bb48c2200eaa1d0af7bcebbe543b929cf76aca2c334c23a74f0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing for linking to known malicious redirector infrastructure. The document body text, though corrupted, includes a URL that appears to be a lure for a 'Bosch go kit professional manual'. This suggests a phishing or malware distribution attempt, likely using spearphishing as the initial access vector.

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=bosch+go+kit+professional+manual In PDF document text
    • http://zokelele.cornerstone-civil.com/uploads/1/3/1/4/131453134/83585.pdfIn PDF document text
    • http://files.littlepeachfeedingandspeech.com/uploads/1/3/2/6/132683135/1018232.pdfIn PDF document text
    • http://files.pcestaskforce.org/uploads/1/3/0/7/130775707/26df3c.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/1/0431/3455/0177/files/52377351693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/63271502865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3957/1616/files/73719791823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/estefania_gomez_desnuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/xapabevujilonujimesil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/ladenilexagudozozesivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/kevisuxonuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/three_letter_usernames.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2513/6792/files/sixth_grade_reading_comprehension_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/91978440936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8910/6846/files/lexepokozazunekukuj.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 6

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_off000063b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B0 5540 bytes
SHA-256: 03451d5b37371db462418fb265c3cf089af7bb5a27c5cd702c1ff87f951d61ca
font_01_sfnt_off00007662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7662 10452 bytes
SHA-256: a4bb3eb6f564f6f94fd64742897540582bb130c7c8ed36a007ff81108b2e2d76

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