Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3aaa0c4df59eaa7…

MALICIOUS

PDF

38.5 KB Created: 2020-08-12 03:38:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c90bcb079b2d3814a53cfda1dcc67a0b SHA-1: 7e7dfee5342c05a2dde19c12b12d07748d5c2000 SHA-256: d3aaa0c4df59eaa79a1c30005be4d30125801a40930bdd5d95fa583ac963a358
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link, https://ttraff.cc/pify?keyword=waiting+for+the+barbarians+pdf+free, which is a strong indicator of malicious intent. Additionally, the document exhibits characteristics of a PDF link farm, embedding a large number of external links, many pointing to shopify.com, likely for SEO manipulation or to distribute further 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.cc/pify?keyword=waiting+for+the+barbarians+pdf+free In PDF document text
    • http://laxejorom.albertomagana.com/uploads/1/3/1/6/131636725/2704197.pdfIn PDF document text
    • http://files.pansqip.org/uploads/1/3/1/3/131383977/ca60719fa3589.pdfIn PDF document text
    • http://files.cornflowerglass.com/uploads/1/3/2/7/132740253/supelaligarug.pdfIn PDF document text
    • http://dinate.katecheeseman.com/uploads/1/3/0/9/130969742/50888.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/1/0436/5156/3670/files/81384112613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0108/4064/files/blue_book_of_english_grammar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/mac_empty_container.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/90614845611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4977/1427/files/nolowuzevezus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16711599054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0894/0441/files/microsoft_excel_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9900/5863/files/molecular_cloning_a_laboratory_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4618/3847/files/pujifusatixakewegigobib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6041/0021/files/20538159947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3966/0951/files/ririduxugavuzamakuzimadet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8694/6206/files/zunefokegowexexabeme.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_off00005632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5632 5424 bytes
SHA-256: a9dce79ad2fa43b36fbd796cb45ffb9213b70a2a97659f5b61ce6d827b33785b
font_01_sfnt_off0000689d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689D 10200 bytes
SHA-256: de656e731c1da38fbf3e3b02dd7401442018bee8f3fdaa9a32c994af9f2cde59

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