Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa190850c808a7b2…

MALICIOUS

PDF

61.4 KB Created: 2020-08-15 02:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fea359cfa34329fe92a2e1071772030c SHA-1: 767266cdb4803f542083237810f92b96cae40545 SHA-256: aa190850c808a7b2da76bc151a00804daea6fc213e1b37b655aeb0de8168e741
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure at https://ttraff.com/pify?keyword=2012+holden+barina+workshop+manual. Another critical heuristic identified a PDF link farm, suggesting a tactic to artificially inflate search engine rankings or distribute malicious links. The document body, though partially corrupted, contains text related to a '2012 holden barina workshop manual', likely a lure to entice users to click the malicious link.

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/pify?keyword=2012+holden+barina+workshop+manual In PDF document text
    • http://files.seancotton.com/uploads/1/3/2/7/132741302/rimejefar-jalesunapiwigej-xiwolumaj.pdfIn PDF document text
    • http://files.tachelesstmk.org/uploads/1/3/1/4/131453005/1008030.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/1/0429/3702/4668/files/88960870920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5316/2394/files/96928848858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/79994893075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7288/8742/files/fender_m80_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1958/2110/files/josujipadugotidipidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1281/6026/files/50394575244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2768/5799/files/dusidarosoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7606/6211/files/60359913329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/awakening_the_heroes_within_carol_pearson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5233/5255/files/rexiseremogaxakuzipak.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA394 5528 bytes
SHA-256: 44fa1621dbe7bb600e356b61ed25a9cb798920045b55080c0919cc6bf652fa94
font_01_sfnt_off0000b61f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB61F 10724 bytes
SHA-256: 6b6e807823fd944ee833ca58986b6cf89b013458003a07959d9867d77625bbc0
font_02_sfnt_off0000dacc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDACC 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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