Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f73aea44445df2…

MALICIOUS

PDF

49.7 KB Created: 2020-08-12 11:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 821524e9334cdb2498f25fa4a8399b7f SHA-1: fb972d8059557ebfa40ce948081681c1287c3bf1 SHA-256: 95f73aea44445df2647e6d67654ed89b0944bd3aafdb64b130c1e19faed80d9d
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary link directing to a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=calisthenics+unity+workout+program+pdf+free', which is likely intended to lure the user into downloading further malicious content. The presence of numerous Shopify-hosted PDF links suggests a tactic to improve search engine ranking and distribute the malicious lure.

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.cc/pify?keyword=calisthenics+unity+workout+program+pdf+free
    • http://files.albertacriticalcaretraining.com/uploads/1/3/0/7/130740127/ab7bc2a79e00.pdf
    • http://files.wandapayne.com/uploads/1/3/0/7/130739567/e9f4b5f19c4877c.pdf
    • http://files.brianscarpetcare.com/uploads/1/3/1/4/131437984/5786205.pdf
    • http://files.mikewilliamslivemusic.com/uploads/1/3/0/7/130740524/58c5c09c.pdf
    • http://files.georgiamayfilms.com/uploads/1/3/1/3/131380063/2640912.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nazowexoratusitufunu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3672/0798/files/sivofagexavegiwax.pdf
    • https://cdn.shopify.com/s/files/1/0428/5205/7244/files/39045477030.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/49228872410.pdf
    • https://cdn.shopify.com/s/files/1/0437/5235/8039/files/rig_veda_smartha_sandhyavandanam_in_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/viwubosu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7660/7390/files/encyclopdie_des_plantes_magiques.pdf
    • https://cdn.shopify.com/s/files/1/0436/2174/4803/files/kasofoxoxatelafidogodof.pdf
    • https://cdn.shopify.com/s/files/1/0427/9464/7719/files/que_es_absorbancia.pdf
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/6691591479.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/55849222687.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15750122344.pdf
    • https://cdn.shopify.com/s/files/1/0433/3099/4326/files/lugovunafesewez.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_off000082b7.bin
2a6e72447c946fcebaa43e23a7b5edeabe745e14b50ecc424f652e68d1ed1b1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x82B7 5732 bytes
font_01_sfnt_off0000961f.bin
3516a1e07e876a934bfe900dd1cb76104579a48130c9d0f478065981bc1f32db
pdf-font-stream PDF embedded font (sfnt) at offset 0x961F 10472 bytes