Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee3f10e732c8554…

MALICIOUS

PDF

43.2 KB Created: 2020-07-18 21:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca8faed5a74378177adcf1800a1ef87b SHA-1: 3da9fd6c64a52e296c6562fe2927647d79ec7744 SHA-256: eee3f10e732c8554ca7f58220f192d72e14c513b511340ab7d992879f38c1a91
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains numerous links to external PDF files, indicative of a link farm. One prominent link redirects to a known malicious infrastructure at 'ttraff.com', disguised as a manual search. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of a callback lure heuristic indicates a potential social engineering tactic. The primary attack pattern involves tricking the user into clicking a malicious link.

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.com/wb?keyword=bosch%20battery%20charger%20manual
    • http://files.karolinabohn.com/uploads/1/3/1/4/131407882/3f2a0f7bee83ee3.pdf
    • http://files.yoonjungseo.com/uploads/1/3/0/9/130969433/wakukudikazo.pdf
    • http://files.e3educate.org/uploads/1/3/2/6/132681409/migigarawe.pdf
    • http://files.buffalovalleypuppies.com/uploads/1/3/1/1/131164021/bc318e.pdf
    • http://files.pineriversdogtraining.org/uploads/1/3/1/0/131070688/jaxubusaxekuvotadi.pdf
    • http://files.mstaconference.net/uploads/1/3/0/7/130776334/2166463.pdf
    • http://files.siccoconstruction.com/uploads/1/3/0/8/130874063/4865806.pdf
    • http://files.framemysore.org/uploads/1/3/1/3/131384789/7349004.pdf
    • https://tekudoguj.files.wordpress.com/2020/06/rolunasuku.pdf
    • https://laderowo.files.wordpress.com/2020/07/wirerilinudu.pdf
    • https://duvisigu.files.wordpress.com/2020/07/37555691553.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/88778764695.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/ranoluber.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94393320092.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/zenuwo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/pimoverisasefov.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/33037999079.pdf
    • https://cdn.shopify.com/s/files/1/0431/2665/3090/files/70506914367.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/wilowumuzajobijik.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_off000063f1.bin
64760dca689ec634291f2bfeab3b8109d4e161cbb9b52022d00a2c572ccbfee7
pdf-font-stream PDF embedded font (sfnt) at offset 0x63F1 5340 bytes
font_01_sfnt_off000075f9.bin
92cf5f2080fc6a1d3e3a4e139c1c4b1b35159621c3bafb9e41002c092b5c0b93
pdf-font-stream PDF embedded font (sfnt) at offset 0x75F9 12912 bytes