Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7a4249831060fe5…

MALICIOUS

PDF

51.9 KB Created: 2020-09-12 08:25:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db90872a5e197fb4faf84f76c7063ec3 SHA-1: 4c562018f0b4ee505a8a9f128e93d5264dc6488b SHA-256: a7a4249831060fe5362415b55f3f76a3a66c2ecf57479d89d6b41e15f77d6238
160 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with keywords related to 'machine learning stock market'. The document also exhibits characteristics of an advance-fee scam, suggesting a lure to a phishing or fraudulent site. The presence of numerous outbound links to PDF files hosted on various domains further indicates a link farm or SEO manipulation tactic to drive traffic to malicious destinations.

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.club/wix?keyword=machine+learning+stock+market+pdf
    • http://files.boltworks.org/uploads/1/3/1/4/131453982/3658798.pdf
    • http://dapefa.utahstudentnurse.org/uploads/1/3/1/4/131438304/vezoziwofu-nobizobenofusu.pdf
    • http://files.midtowntorontotherapy.com/uploads/1/3/1/4/131482886/gobefote_bezamosofe.pdf
    • http://files.annettecargill.com/uploads/1/3/0/7/130738553/zusor.pdf
    • http://nosis.arfamilycoalition.org/uploads/1/3/0/8/130813780/mupimot.pdf
    • http://files.rmssf.org/uploads/1/3/0/7/130775384/mexetuzumabekuki.pdf
    • http://files.juliedowling.net/uploads/1/3/0/8/130873822/mukusamigufonewiga.pdf
    • http://files.silentwitness.net/uploads/1/3/1/3/131383838/mevolurasuxulilaw.pdf
    • http://files.cassieorduno.com/uploads/1/3/1/0/131069934/vudipenegidiloxuxaso.pdf
    • http://natijuve.allterrainridersatvclub.com/uploads/1/3/2/6/132681229/7500da67015.pdf
    • https://cdn.shopify.com/s/files/1/0429/9050/2051/files/naforolalizi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30698029692.pdf
    • https://cdn.shopify.com/s/files/1/0436/6126/3001/files/jemorazunobas.pdf
    • https://cdn.shopify.com/s/files/1/0437/6264/7192/files/importance_of_arabic_language_in_islam.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/fusaraveluf.pdf
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/voxowawu.pdf
    • https://cdn.shopify.com/s/files/1/0436/6866/8569/files/jewipowid.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_off000072ce.bin
7054202772682b24f11599058d951f637b8cd39cbb91149f9ca434d6f8725165		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72CE 3304 bytes
font_01_sfnt_off00007eb3.bin
e3bd1649c3fee02a23b692c0bacc1da3c0e87e3482d26f810d2cbd6bc68fc7da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB3 5428 bytes
font_02_sfnt_off000090f4.bin
70211bfc2f369828cb010e144cc5a017db938e5626927e701f5b56e8f3692112		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90F4 10240 bytes
font_03_sfnt_off0000b3ef.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3EF 4324 bytes

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