Malicious PDF — malware analysis report

Static analysis result for SHA-256 67124e3bf3e6a53a…

MALICIOUS

PDF

44.6 KB Created: 2020-08-11 01:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b12c5e8e900fb89351e094d2ba3a2f7 SHA-1: 06e3eb41cda49d3b17612681660539a956826177 SHA-256: 67124e3bf3e6a53acd24496e101cacfe7a5801b273a541b8e751ee537c5836e2
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one critical heuristic identifying it as a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a link farm or phishing attempt. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=dawn+of+egyptian+art+pdf
    • http://files.pvtechsolutions.com/uploads/1/3/1/4/131437725/7602133.pdf
    • http://tirujud.cascadiayouthmentalhealth.com/uploads/1/3/0/7/130739415/jonududenego.pdf
    • http://files.lisacartlidge.co.uk/uploads/1/3/1/0/131070711/01c636.pdf
    • http://poxovuwu.laurietsutakawa.com/uploads/1/3/1/0/131069934/jetobejekadi_tababuve_dezevawor_nuguwagikugin.pdf
    • http://files.alexbowlerevangelism.com/uploads/1/3/1/4/131453588/dinogoxisasogupafuvi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0446/2179/1395/files/biometria_hematica_ejemplo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/lolorodusenolagi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/35190528526.pdf
    • https://cdn.shopify.com/s/files/1/0438/2693/8018/files/postpartum_hemorrhage_acog.pdf
    • https://cdn.shopify.com/s/files/1/0436/2128/6050/files/nuzalibasikuwinedexetekiw.pdf
    • https://cdn.shopify.com/s/files/1/0438/8323/3448/files/zavuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/70366999803.pdf
    • https://cdn.shopify.com/s/files/1/0434/1632/2215/files/48743876738.pdf
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/dibexevapitegebe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/pre_school_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0435/5201/4491/files/electroforesis_en_acetato_de_celulosa_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0437/9551/3505/files/sociology_of_health_healing_and_illness.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007096.bin
9c05aa65e49508b324bc719ff24a5bed713f6f8c66e684d1570688e4122342d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7096 5192 bytes
font_01_sfnt_off0000826e.bin
b33507a25a4f0a5e93446b1ffa2431afc699382e7a2b9fba4657efdd5b824922		 pdf-font-stream PDF embedded font (sfnt) at offset 0x826E 10276 bytes

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