Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d6563e388f7aad9…

MALICIOUS

PDF

37.1 KB Created: 2020-09-16 19:03:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 866ef5bd93bd1d4ebf6f30e438b38c03 SHA-1: bb1d2f6d4e01720691ef572f59083803eb61fc55 SHA-256: 4d6563e388f7aad9ffe6599b2a99f556be2d7af66df9054c6b235f47f93c70ec
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to SEO-optimized PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.club/wix?keyword=mr+buddy+heater+manual'. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious sites. The document body, though heavily corrupted, contains fragments of the URL and keywords, reinforcing the 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.club/wix?keyword=mr+buddy+heater+manual
    • http://files.manhattanhope.com/uploads/1/3/1/4/131454024/kizan_jogesatovimafo.pdf
    • http://mikil.tallsycamorecampground.com/uploads/1/3/1/0/131070381/gaxetiko.pdf
    • http://wenogew.reishorerealty.com/uploads/1/3/2/8/132814930/849a11.pdf
    • http://files.wheelmanspokane.com/uploads/1/3/0/8/130814706/rubotopo.pdf
    • http://xenude.hiawasseeapparel.com/uploads/1/3/1/6/131606069/nedisulumizuvo.pdf
    • https://fdfc974e-c4d2-445b-bcc3-4c938b10cb11.filesusr.com/ugd/d1c05f_6dfd5966885748129402a3f6f7561aea.pdf?index=true
    • https://7a682457-fdb0-4706-bbd3-61ced659d25b.filesusr.com/ugd/277b62_4426910e79744512a165fdc75b01a232.pdf?index=true
    • https://345bdd64-550e-4c28-8f34-613d94c39693.filesusr.com/ugd/9734e7_1c6f5e50cb174c0581510878e320cd13.pdf?index=true
    • https://f45956f2-2e52-433d-bfc5-0dfddd845234.filesusr.com/ugd/e3325f_eaae28da27374d6a9098e29295426f40.pdf?index=true
    • https://8dcb7f16-55c0-49e0-a9a2-3deca07e0254.filesusr.com/ugd/60ffa2_be574d9ef4cc418abc65cd0821cef85c.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0431/9150/0961/files/nokomesinesigofuxazil.pdf
    • https://cdn.shopify.com/s/files/1/0440/2823/1830/files/diccionario_biblico_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37278413385.pdf
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/37283556999.pdf
    • https://cdn.shopify.com/s/files/1/0466/2765/1749/files/ikea_akurum_kitchen_installation_guide.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_off000053f9.bin
d5b69a0d887a9c417633bec0b94dc068b1587b58a3602f9181f7ad4bf5447b96
pdf-font-stream PDF embedded font (sfnt) at offset 0x53F9 5136 bytes
font_01_sfnt_off00006552.bin
e9f01e0ea0a642d54cbee3fe83c1cf01a6c2a0a097fb6ff741e4118770190f50
pdf-font-stream PDF embedded font (sfnt) at offset 0x6552 10096 bytes