Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb860c37a0d1574…

MALICIOUS

PDF

40.5 KB Created: 2020-08-22 22:36:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b5ed4b35b274d942f6830ae8b42849a SHA-1: e2c7b0b9b2a9b407ec46c1d3018017dddaf36148 SHA-256: abb860c37a0d15744079285c84d6b49addf2b06bee970f826dcad3b471f9b4a5
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to ttraff.ru, disguised as academic resources. This indicates a phishing or scam attempt to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains the malicious URL and other PDF-related metadata, further supporting the attack pattern.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=academic+writing+for+graduate+students+pdf
    • http://files.carlyhaecktherapy.com/uploads/1/3/1/1/131164009/fosawaperodegamop.pdf
    • http://gividera.zenprovcomedy.com/uploads/1/3/1/3/131380213/3149299.pdf
    • http://files.kaipumakanichc.org/uploads/1/3/1/4/131455141/warovamoloxuzitadet.pdf
    • http://files.timelessvaca.com/uploads/1/3/0/7/130740465/ceb0feb31c940c.pdf
    • https://cdn.shopify.com/s/files/1/0451/1835/7669/files/engineering_drawing_textbook_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/magento_2_theme_development_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/clinical_anatomy_of_lower_limb.pdf
    • https://cdn.shopify.com/s/files/1/0433/4524/8421/files/31757773192.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wurawosupamajo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/campbell_biology_10th_edition_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0428/5415/4406/files/whatsapp_for_android_2._3_6_apk.pdf
    • https://cdn.shopify.com/s/files/1/0437/5917/3784/files/98460556904.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006075.bin
77f58287a9ed1a075a31ccfd2403b98c4d61a4ec562d59e8bdbb4c3546cd21e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6075 5524 bytes
font_01_sfnt_off00007338.bin
ad0808ac9f62c1fd649a22ac57f421a165f003c1d565dca0b9c794c5c4303eec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7338 9920 bytes

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