Malicious PDF — malware analysis report

Static analysis result for SHA-256 42c094462016e80c…

MALICIOUS

PDF

46.7 KB Created: 2020-08-13 00:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e2236e5bf447b9be9741f8d58cb0ba6 SHA-1: a11002fe5fe5f0e5e6fc9bd4251f44aea8af46e4 SHA-256: 42c094462016e80c4fc246dfae41b73dab3e23652b03984af7f282f474df8f2f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a malicious redirector link disguised as an 'Accountancy project for class 12 cbse 2020 18 pdf'. This link, https://ttraff.ru/pify?keyword=accountancy+project+for+class+12+cbse+2020+18+pdf, is identified as a critical threat. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to potentially malicious or unknown domains. The primary attack vector appears to be social engineering through a deceptive document title, leading users to click on the malicious URL.

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=accountancy+project+for+class+12+cbse+2020+18+pdf
    • http://files.sib4sib.org/uploads/1/3/2/7/132741385/dda02c0e0cf1.pdf
    • http://files.ladyccollection.com/uploads/1/3/1/8/131871659/lusubifelig-nekonajuna-ritivuwuw-namero.pdf
    • http://golama.paulabarbercoaching.com/uploads/1/3/0/9/130969972/9389567.pdf
    • http://files.cefdauphin.com/uploads/1/3/0/7/130775897/wofimifirutuvemef.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/9823991896.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/wafizivedasumosed.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2871/files/lopir.pdf
    • https://cdn.shopify.com/s/files/1/0437/6395/7918/files/5e_monster_manual_2.pdf
    • https://cdn.shopify.com/s/files/1/0438/5426/6533/files/lebame.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/raregum.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/luvubanizonom.pdf
    • https://cdn.shopify.com/s/files/1/0432/9465/4632/files/68651223834.pdf
    • https://cdn.shopify.com/s/files/1/0437/7529/5640/files/kitab_bajuri_jilid_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1578/files/93757408639.pdf
    • https://cdn.shopify.com/s/files/1/0433/8188/3030/files/catacumbas_de_roma.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_off000075ff.bin
05e460303bec215b29b4d583d4ea44c010bb87ef2f565b1924bee6c88d86199b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75FF 5976 bytes
font_01_sfnt_off00008a72.bin
dfe47bba2473c32635925f16dc81faacd86b4ac9243f1c8e9dc409303ac0f125		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A72 10352 bytes

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