Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b905f61dd447b5d…

MALICIOUS

PDF

74.3 KB Created: 2020-08-11 19:40:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f3f26ba3421d1f5d752278ed64bbac8 SHA-1: f8a50c81f21f505579eb9e05e3b3adb91b17553c SHA-256: 8b905f61dd447b5d64ee7a0cb833de2bb3f4e8c28d2916bc69d311bcd31d745b
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to traff.com, suggesting a lure to malicious content. The document body, though heavily obfuscated, contains references to 'aro orientation book pdf' and embedded URLs, reinforcing the phishing pretext. No scripts were extracted, but the PDF structure itself is used to host a link farm designed to redirect users to potentially harmful sites.

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.com/pify?keyword=aro+orientation+book+pdf
    • http://files.ffol.org/uploads/1/3/2/6/132681758/d5392.pdf
    • http://dulijix.sunbeamfamilyyoga.com/uploads/1/3/1/8/131871721/fagexudoduwaxegige.pdf
    • http://files.thebonobodiaries.com/uploads/1/3/1/4/131406286/sukewuf.pdf
    • http://files.lovegrowbuild.com/uploads/1/3/0/7/130739674/2bef3.pdf
    • https://cdn.shopify.com/s/files/1/0431/0607/4780/files/xewebewofa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niwaxesajikibulunetegidu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8725/0087/files/15198250596.pdf
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/zovesebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/27739624365.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/devirupomup.pdf
    • https://cdn.shopify.com/s/files/1/0434/8755/9833/files/calorific_value_of_different_fuels.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/74444898244.pdf
    • https://cdn.shopify.com/s/files/1/0433/6061/6599/files/joguxesexakigani.pdf
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/cpt_2017_professional_edition_free_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d28d.bin
17da372934fb5bf8f27890dfe03c636c411d6e0589f8af65aed1c78277b5f8fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD28D 4804 bytes
font_01_sfnt_off0000e2e8.bin
6a3ac8562b0a29d5433410a04db9edd6884b27fb1e1d6e19fe3be058d9fb3a51		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E8 13444 bytes
font_02_sfnt_off00010e7f.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7F 4324 bytes

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