Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e80c2b8a8c1d904…

MALICIOUS

PDF

42.1 KB Created: 2020-08-20 12:31:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44a7c3308b9b2c6adb9f67ca6cfdaad8 SHA-1: eb71bfa82f5a130d0900145479618dc3f37ca153 SHA-256: 4e80c2b8a8c1d904693edeb61339e3b3ed173285ca432b96bbe8cfc05e4309ba
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with a prominent link to a known malicious redirector at `https://ttraff.ru/pify?keyword=google+play+store+free`. This indicates a likely attempt to lure users to malicious content by disguising it as a Google Play Store offer. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of numerous other PDF links suggests a link farm strategy to obscure the primary malicious destination.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=google+play+store+free
    • http://files.apg-ga.co.kr/uploads/1/3/1/4/131438190/2587992.pdf
    • http://files.dimitraxidous.com/uploads/1/3/1/6/131606984/tatefu.pdf
    • http://files.andydoveyphotography.com/uploads/1/3/2/3/132302859/64cbeedb7f.pdf
    • http://pegif.thaireflexology.co.uk/uploads/1/3/2/6/132683041/jamasusebolovagenebu.pdf
    • http://files.swingbandflorida.com/uploads/1/3/1/4/131437254/7673137.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/37448428594.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/molakujixiwejezokatape.pdf
    • https://cdn.shopify.com/s/files/1/0436/5120/3225/files/xesuzekupu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6618/files/rijoga.pdf
    • https://cdn.shopify.com/s/files/1/0430/9303/3117/files/doleposuvakepowusajame.pdf
    • https://cdn.shopify.com/s/files/1/0433/3839/9912/files/73886307805.pdf
    • https://cdn.shopify.com/s/files/1/0434/9945/4628/files/32654231760.pdf
    • https://cdn.shopify.com/s/files/1/0437/0549/9803/files/virtualbox_shared_folder.pdf
    • https://cdn.shopify.com/s/files/1/0431/8792/9252/files/skripsi_tentang_brand_awareness.pdf
    • https://cdn.shopify.com/s/files/1/0435/7285/4939/files/linux_printer.pdf
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/nomafuvezasiguku.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/nebutuboro.pdf
    • https://cdn.shopify.com/s/files/1/0432/0755/7283/files/18906322186.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_off000067da.bin
207ba6668ba345f1b816625bed4803708ae225816c2f0c4288868a62e9ff0f9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x67DA 5204 bytes
font_01_sfnt_off000079b1.bin
603d286491413e3f874f24acc0e8ced2277c9a04b3a474952b2b826da5e331a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x79B1 9944 bytes