Malicious PDF — malware analysis report

Static analysis result for SHA-256 95be04547904c771…

MALICIOUS

PDF

37.7 KB Created: 2020-08-20 08:31:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bf7e70ed545d160708f544d12666946 SHA-1: 749b5f34ed357d92bdb2e28c134bf747559100de SHA-256: 95be04547904c771041423c393edbb1c4d60f1fb3ad0eb29ac58e768526ea5fb
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. Crucially, one link, 'https://ttraff.cc/pify?keyword=btwin+riverside+500+manual', is identified as a malicious redirector. This indicates the document's primary purpose is to lure users into clicking malicious links, likely for phishing or malware distribution.

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=btwin+riverside+500+manual
    • http://files.vernerearlylearning.org/uploads/1/3/0/8/130814586/xupepozus.pdf
    • http://files.arcnwi.com/uploads/1/3/2/6/132682295/regoxezilev.pdf
    • http://files.joslinelementary.org/uploads/1/3/0/7/130740210/3366443.pdf
    • http://nojugimu.durhamsai.com/uploads/1/3/1/4/131437987/1665463.pdf
    • http://files.stenotab.com/uploads/1/3/1/0/131070459/xutubamovines-kitef-tikuxoberegi-zuketuvobami.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8453/files/cover_letter_for_job_applications.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/legal_clerk_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9999/6839/files/rarew.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/65120872535.pdf
    • https://cdn.shopify.com/s/files/1/0434/2362/9477/files/zixijokejedosiri.pdf
    • https://cdn.shopify.com/s/files/1/0437/7015/1061/files/jafudisolub.pdf
    • https://cdn.shopify.com/s/files/1/0433/0278/1083/files/niboj.pdf
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/fosibasajadopageze.pdf
    • https://cdn.shopify.com/s/files/1/0440/3865/2069/files/sunof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9646434013.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_off0000556f.bin
af831856fab69edb148698821873a1cb1bde7f0dc9da17fe4cbbb2da015daf97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x556F 5440 bytes
font_01_sfnt_off000067ef.bin
5637b747967804fd3b22a955aa79af54d7fd374bf4dd653da85b035cf2d6a04e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67EF 10016 bytes

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