Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4705db8f13fc7b2…

MALICIOUS

PDF

41.1 KB Created: 2020-08-14 19:42:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6f30e5aa690ea559931a20bf1f08410 SHA-1: 4324c4dc798d0e98fdd6f12597fcd47faffd4ec8 SHA-256: e4705db8f13fc7b2b975e8a19ef3f8339e0ed9c408775bf0d43a267b4edd1c0a
160 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is part of an advance-fee scam lure. The document body, though heavily obfuscated, contains text related to 'asphalt 8 hack mod apk' and a URL that aligns with the advance-fee scam heuristic. The presence of numerous links to Shopify-hosted PDFs suggests a link farm used for SEO poisoning to attract victims.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=asphalt+8+hack+mod+apk+andropalace
    • http://fobizovor.oakdellfarm.com/uploads/1/3/1/4/131407406/101801.pdf
    • http://files.mrlamarra.com/uploads/1/3/0/9/130969434/6a53cf3ff3.pdf
    • http://files.comedianambrosejones.com/uploads/1/3/1/4/131406337/bivanovavu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/astral_upvc_pipes_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0434/2926/5574/files/dokiwabosedaxenonumed.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/55492335808.pdf
    • https://cdn.shopify.com/s/files/1/0437/8610/9086/files/learn_korean_file.pdf
    • https://cdn.shopify.com/s/files/1/0435/3117/4039/files/5315599530.pdf
    • https://cdn.shopify.com/s/files/1/0438/1271/6701/files/mirolojobudurajuzobezis.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/nikuliravoratokosupudanix.pdf
    • https://cdn.shopify.com/s/files/1/0437/1136/5288/files/62714021601.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/cosmic_rays_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8766/7104/files/13853069433.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_off000061c1.bin
c94bf67551271eb35b8d5110379ce4cc4e106962050575cb4e80120121dfe465		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C1 5560 bytes
font_01_sfnt_off00007474.bin
6b8389ee8a4eb8d38df85f009a72836bab4ab9615bb7b38e0bc92db5c26b7272		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7474 10272 bytes

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