Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cac646467538493…

MALICIOUS

PDF

52.8 KB Created: 2020-08-25 00:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d45ad394cd56bd9c45ceeb863c0bfa8 SHA-1: 8bbcad7be262926502f667e3b1eab7c204fa9d71 SHA-256: 7cac6464675384934ac54494c8294d78ec13ec2f5bffd90d79b8fd135471eebd
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised with a keyword related to 'Bollywood movies app apk'. The heuristic PDF_SEO_LINK_FARM indicates a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly flagged this PDF as malicious. The presence of embedded URLs and the overall structure point towards a phishing or scam attempt.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=bollywood+movies++app+apk In PDF document text
    • http://files.katiemachain.com/uploads/1/3/1/4/131455283/57a787ca629.pdfIn PDF document text
    • http://vezab.stjohnlutherans.org/uploads/1/3/1/4/131413418/pitibu_bamof.pdfIn PDF document text
    • http://files.handhinsurance.net/uploads/1/3/1/4/131438539/mefezipopeke.pdfIn PDF document text
    • http://files.refrigerationengineersuk.com/uploads/1/3/0/7/130739746/44f7d3d0599be9c.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/1/0433/6871/0309/files/pizza_hut_learning_zone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1561/8203/files/sokubagatuwosiwadem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3178/7670/files/finance_equations_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0675/4717/files/descargar_banco_falabella_peru_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0530/3190/files/mizejusajive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7075/8820/files/11583756815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/dovam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8062/0963/files/ruzuvugetakoviwuzedolip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33971068516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8978/7048/files/algebra_1_eoc_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/7014/9023/files/adverse_reaction_reporting_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/6694/0581/files/acr_guidelines_lumbar_mri.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00007a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A87 5376 bytes
SHA-256: 0ecd3858d63d1a818fbb76ca8cc3ce287439740f97ddb6a1b882ed32aec4c3b3
font_01_sfnt_off00008ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE4 10412 bytes
SHA-256: 0f984b81e1f9d034a6af381fa2f93167fed659b5b8b6c91e893cd2f3d8d1c6e2
font_02_sfnt_off0000b0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0D4 16148 bytes
SHA-256: 98bbda09e34957c2c47eea570891e411fa41ced272e9777bbef021ce7395b75a

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