Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a9b92835036c291…

MALICIOUS

PDF

50.2 KB Created: 2020-08-12 17:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f5c3557a453161b38f6a004b1986364 SHA-1: 0f5a323eae059c1bc2e74ee09a6b461f592f1171 SHA-256: 9a9b92835036c291e5993b21b3b6eb6b4830b5d5d9fe3e663416d36be18e3c1a
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. The document body text and embedded links explicitly mention "Neet mcq books pdf free download", indicating a lure to trick users into clicking the malicious URL. The primary malicious URL identified is https://ttraff.com/pify?keyword=neet+mcq+books+pdf+free+download, which is likely used to redirect users to a further malicious destination.

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.com/pify?keyword=neet+mcq+books+pdf+free+download
    • http://zuzexi.barry3d.com/uploads/1/3/0/8/130814328/jiseguluduzokoma.pdf
    • http://files.hurdsfieldnd.com/uploads/1/3/1/4/131406592/jezepofetese_bibegirafofip_dubitafavep.pdf
    • http://seziwu.paolasoccer.org/uploads/1/3/0/7/130776795/64ca66de81efb.pdf
    • https://cdn.shopify.com/s/files/1/0439/3612/0990/files/blueprint_3_student_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65022979336.pdf
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/61598904627.pdf
    • https://cdn.shopify.com/s/files/1/0432/1057/1940/files/mage_the_awakening_summoners.pdf
    • https://cdn.shopify.com/s/files/1/0429/7333/1609/files/cours_anglais_intensif_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/zazufosezokunekam.pdf
    • https://cdn.shopify.com/s/files/1/0437/7896/5656/files/pifekeveje.pdf
    • https://cdn.shopify.com/s/files/1/0428/9065/7951/files/zevag.pdf
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/73140228589.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4741/files/pulobuvekuxosaxuzasu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0147/files/39328656389.pdf
    • https://cdn.shopify.com/s/files/1/0435/4362/5880/files/25930811907.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ba9.bin
8553cc38dc0defea943ca262589397c2520991b6680ce4f3981ce28da0befe5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA9 5692 bytes
font_01_sfnt_off00006ef8.bin
fa802d4521c7f1d81c9f3253483be642d916273b5b2c26a8cca4be97d4ee92cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF8 5636 bytes
font_02_sfnt_off00007e98.bin
895aede649040841e526da5db1fddaf2bfbe47f2671b72f8060965c73ca5de11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E98 10344 bytes
font_03_sfnt_off0000a24c.bin
26328976266d8aefe2184aabd6b063a25b2d0f944167558ad280af27f3f2273c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA24C 17516 bytes

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