Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c747b9e0afc2427…

MALICIOUS

PDF

57.2 KB Created: 2020-08-04 11:08:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa11d3f5ac1aa31a2a920f3da0e21e23 SHA-1: 2c85fcfd567dd278c87f4cf7b14db1db520e259a SHA-256: 9c747b9e0afc242723d51b3fccc53bc03ada4177dc256d2930c94a247072d497
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=bhagavad+gita+online+free+pdf'. Additionally, it exhibits a PDF link farm with numerous links, many hosted on cdn.shopify.com, suggesting a tactic to distribute malicious content or engage in SEO manipulation for malicious purposes. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bhagavad+gita+online+free+pdf
    • http://files.martinspitznagel.com/uploads/1/3/1/4/131452958/715791ba6.pdf
    • http://files.access2college.com/uploads/1/3/0/7/130739227/fogogiv.pdf
    • http://files.markhamdistrictsoftball.ca/uploads/1/3/1/3/131383377/vubopem_kemiruzexevulo_renuzu_wanarajuvum.pdf
    • http://files.casewatson.com/uploads/1/3/1/4/131437087/potiv_gujimutipata_medexi_gaferaf.pdf
    • http://files.santafedatahub.com/uploads/1/3/0/7/130775387/7027310.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fovurasavelibegesixaga.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/anticuerpos_anticardiolipina.pdf
    • https://cdn.shopify.com/s/files/1/0433/7549/3271/files/64441180835.pdf
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/kaxojevuvadabaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/3305/9737/files/68677853975.pdf
    • https://cdn.shopify.com/s/files/1/0433/6756/3418/files/56175932781.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/galejukebu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/72169571489.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/mozelozomugavumafotoli.pdf
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/kokozerez.pdf
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/vernier_caliper_reading_formula.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/15895008435.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000701e.bin
92bed8a30e25b020c8ac0de7bef4f5025f1001b06c646daa4bd99c89287aaa5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x701E 5020 bytes
font_01_sfnt_off0000812f.bin
eb903a4bcabb0673128613fc2c6a3b3be6b6be0204d11159aa2f590e1d82ee93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x812F 3740 bytes
font_02_sfnt_off00008ca8.bin
34ef5478fde8b42f68f8ab33cded8b581007868b071ff06de2769c8ce53a856b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA8 10332 bytes
font_03_sfnt_off0000aff9.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFF9 4324 bytes
font_04_sfnt_off0000bdf9.bin
42b1cc2fd79e3dc1b8135488e25ef238491957d71f122984edb28b3b2bf3e799		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDF9 7144 bytes

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