Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aa7f7f810da4e3d…

MALICIOUS

PDF

60.5 KB Created: 2020-08-10 10:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 563e94c8aa87be91a9ad9005faa5304d SHA-1: 7648e185b85ce3eac709f57c799d02a1f7165d13 SHA-256: 8aa7f7f810da4e3d6f9d5ead3610068a7babd4a58ca29d8f93f999a365db83e5
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=am+law+100+list+pdf, which is likely used to redirect the user to a further malicious destination. The document body, though heavily obfuscated, contains this URL and other links, suggesting a social engineering lure. No scripts were extracted from this sample.

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=am+law+100+list+pdf In PDF document text
    • http://files.lite-box-electronics.com/uploads/1/3/1/4/131406149/3365420.pdfIn PDF document text
    • http://files.isdrc.net/uploads/1/3/1/3/131398110/kijatog_nivowinid_busixalosagatom.pdfIn PDF document text
    • http://files.thebusybeelearningcenter.com/uploads/1/3/2/7/132740237/rarir_vefejitu.pdfIn PDF document text
    • http://files.samosetband.com/uploads/1/3/1/3/131378975/rorokudadigaxuxik.pdfIn PDF document text
    • http://dutaz.ldcustoms.com/uploads/1/3/1/4/131407089/cc53477498.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/1/0437/4387/1128/files/zinakosovat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6944/8096/files/physics_textbook_grade_10_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4738/6268/files/kowufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/11762845803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/47753411034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/gipukupulugozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/15416996672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0455/files/15005393667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/79132487243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5999/5033/files/metropolitan_achievement_test_kindergarten.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 7

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_off000093b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B4 4820 bytes
SHA-256: 1e5334cd17979ee63f7d6a29c020a21a38b4fcf2a81462d93d4317adea678f2a
font_01_sfnt_off0000a425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA425 16204 bytes
SHA-256: f88c66bd7818fbb1537d649a58758f90127fb533be7560c0a419e89dfd3faa65
font_02_sfnt_off0000d67f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD67F 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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