Malicious PDF — malware analysis report

Static analysis result for SHA-256 0db51ee555f42c2b…

MALICIOUS

PDF

42.5 KB Created: 2020-08-17 02:18:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6fba29b71c05ef1485f5cf2bc9910c1 SHA-1: 81ba8f70216065ee59f7a8f279eb03cca17516b5 SHA-256: 0db51ee555f42c2b97314cce3ed6aa94c0f25ee47d2613c4153cb51e95436a7c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=lowrance+hook2+5+mounting+template'. This indicates the document's primary purpose is to redirect users to potentially harmful sites. No scripts were extracted, but the presence of numerous links and the malicious redirector strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=lowrance+hook2+5+mounting+template
    • http://files.theperfectpairdolphintrilogy.com/uploads/1/3/0/9/130969498/kuromelokimut-kukiwikuro-kozisubizesujer-zuseguf.pdf
    • http://files.theroute92.com/uploads/1/3/0/8/130873973/zuguxizamuri.pdf
    • http://vasazosu.agbio-inc.com/uploads/1/3/1/3/131384169/zuxitop-suzagokuxopudab-kipunifi.pdf
    • http://files.delaneydrywall.com/uploads/1/3/0/7/130776542/gukameluzoro.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/8985/2568/files/l_alphabet_affichage.pdf
    • https://cdn.shopify.com/s/files/1/0434/1730/5240/files/staples_business_card_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/7852/4832/files/65050131043.pdf
    • https://cdn.shopify.com/s/files/1/0435/1872/2216/files/zefeletabumevivugoni.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5765/files/24658449496.pdf
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/puwobuletowunek.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7345/files/30781841259.pdf
    • https://cdn.shopify.com/s/files/1/0440/0257/4494/files/32905085066.pdf
    • https://cdn.shopify.com/s/files/1/0443/8504/2598/files/bijection_rciproque.pdf
    • https://cdn.shopify.com/s/files/1/0436/8846/0441/files/pdf_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/acme_thread_pitch_chart.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/12252146935.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064d2.bin
02ef030c041e08afb36b2348fb2dc123b4e5852706bbac26b5764e1659b19391		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D2 5524 bytes
font_01_sfnt_off00007782.bin
6435e23e393ae95dd811a06f18ced96753203dba5679da4be8b02719c80edd21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7782 10888 bytes

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