Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d864c476ae9d9c6…

MALICIOUS

PDF

47.9 KB Created: 2020-08-03 08:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f887229307fd096e8e4b1025ee2a9c6b SHA-1: e1fd0f28ec66ebb8e680d6eaad5660d2ef3af07d SHA-256: 3d864c476ae9d9c679e23fe08ae5cf913ceed21d0e9b29a3e7a49426d16e7a9b
140 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, including a critical redirector link to 'ttraff.ru', suggesting a phishing or scam campaign. The document body, though heavily obfuscated, contains text related to 'Questar gas rebate', aligning with the callback phishing lure heuristic. The primary intent appears to be directing users to malicious or deceptive websites.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=questar+gas+rebate
    • http://files.kapnordicskiers.com/uploads/1/3/2/6/132681452/de8eff15f53ab89.pdf
    • http://tuvuje.gameworldparty.com/uploads/1/3/1/4/131408024/9172385.pdf
    • http://files.uusouthsuffolk.org/uploads/1/3/1/4/131437508/dejokoziwo.pdf
    • http://files.heirloomtattoo.com/uploads/1/3/0/7/130774993/gejov.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/35995680818.pdf
    • https://cdn.shopify.com/s/files/1/0431/7931/1253/files/8445347991.pdf
    • https://cdn.shopify.com/s/files/1/0438/9008/1960/files/eye_roll_text.pdf
    • https://cdn.shopify.com/s/files/1/0434/5030/2616/files/buwulojubu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7274/9721/files/49337385490.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/boxoranogadopika.pdf
    • https://cdn.shopify.com/s/files/1/0431/5326/0701/files/40170451732.pdf
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/sikamubezov.pdf
    • https://cdn.shopify.com/s/files/1/0437/7808/0919/files/83235786091.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/ruluzadunovunazufizeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rakapadanixip.pdf
    • https://cdn.shopify.com/s/files/1/0428/8721/7319/files/salesosinokidemu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4924/files/62752434237.pdf
    • https://cdn.shopify.com/s/files/1/0433/8637/2246/files/natefe.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_off000066a7.bin
df77df649157dc52b1bf074949faada8262bccbf70647ab7c66221c86051a685
pdf-font-stream PDF embedded font (sfnt) at offset 0x66A7 4640 bytes
font_01_sfnt_off00007680.bin
b51974c3c3cc140b685c4e9b142501952ed1822f83d3de2fab7d861f04987f82
pdf-font-stream PDF embedded font (sfnt) at offset 0x7680 14696 bytes
font_02_sfnt_off0000a4cd.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4CD 4324 bytes