Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4e732a43299e180…

MALICIOUS

PDF

46.4 KB Created: 2020-08-06 21:22:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fc7860d37496c71bdf2fa4c80640ca1 SHA-1: a346009d5e8a33adecc08e56f49559d935a60302 SHA-256: f4e732a43299e1800bb68fc505d89244fccc12f198633edf52009bb4e5cba8bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a lure for a 'pdf to word converter' and embeds numerous links, many of which point to potentially malicious redirectors. One critical heuristic indicates a direct link to known malicious redirector infrastructure via 'https://ttraff.cc/pify?keyword=pdf+to+word+converter+online+100+free'. Another heuristic flags the document as a link farm, suggesting an attempt to game search engines or distribute malicious links widely. The presence of a remote-support tool lure further indicates a social engineering attempt to gain user trust or access.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=pdf+to+word+converter+online+100+free
    • http://files.ivesterearlycollegehallco.org/uploads/1/3/1/3/131381288/c1098f3e50d65d.pdf
    • http://files.reliefequineproducts.com/uploads/1/3/2/3/132303133/3443880.pdf
    • http://files.wessidevibrationsinc.com/uploads/1/3/1/4/131437312/5505649.pdf
    • http://pipepib.jcprhac.org/uploads/1/3/2/7/132740900/jezudaxivi-tefatu-vumod-bevuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/42948622074.pdf
    • https://cdn.shopify.com/s/files/1/0433/9020/6119/files/24232880363.pdf
    • https://cdn.shopify.com/s/files/1/0440/8741/0840/files/ctet_question_paper_with_answer_key_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/innotech_dog_fence.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/88150912909.pdf
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/git_move_changes_to_new_branch.pdf
    • https://cdn.shopify.com/s/files/1/0435/6302/4542/files/mutisefaneginiden.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/78318196341.pdf
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/87067426123.pdf
    • https://cdn.shopify.com/s/files/1/0428/8079/4780/files/elastic_and_inelastic_collision.pdf
    • https://cdn.shopify.com/s/files/1/0429/2873/4367/files/iris_sleeping_with_sirens.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/89947349204.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/bepasisazo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/zevowaxew.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_off000078ec.bin
09ab94cec3215edef6c7a89acba52b3fe00a3a686973ac18f2c7c4547723f6ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78EC 4972 bytes
font_01_sfnt_off00008a09.bin
0028346a6db03c955db204aecd6ba4c6f908493ca4bfcac04addcf1a51aeb8db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A09 10064 bytes

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