Malicious PDF — malware analysis report

Static analysis result for SHA-256 b227b829cbdc448e…

MALICIOUS

PDF

44.5 KB Created: 2020-08-11 14:40:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31bc70f91f4f618b1d16dcce6c92dd91 SHA-1: fba0ec469f748445c27ce2656016b0330fa993da SHA-256: b227b829cbdc448e67ea1664aa0282eeed6d2c2dac20119f8c3b94812b8a5ffd
214 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One critical heuristic indicates a malicious redirector link to 'ttraff.ru', suggesting a phishing or malware distribution attempt. The document body also contains the same URL, reinforcing the malicious intent. The presence of numerous external links, including the malicious redirector, indicates a link farm or redirection strategy to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.ru/pify?keyword=importance+of+assessment+in+special+needs+education.+pdf In PDF document text
    • http://files.realappealhome.com/uploads/1/3/0/7/130776795/4133536.pdfIn PDF document text
    • http://files.woolandthings.com/uploads/1/3/2/6/132681517/a3bd0d1f611796.pdfIn PDF document text
    • http://files.thewrightograph.com/uploads/1/3/1/0/131070178/057a271c7f0.pdfIn PDF document text
    • http://files.plevnamerinos.com/uploads/1/3/0/8/130813988/0f7a36f2.pdfIn PDF document text
    • http://files.bluebarnbbq.com/uploads/1/3/0/7/130775145/4575080.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/80695192770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3203/4980/files/40716908532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/crown_him_majesty_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/96394323307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/77528116776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3657/1808/files/accounting_principles_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9520/3745/files/xiluzanotoxuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/business_management_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0704/1958/files/cinema_clock_windsor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9970/0889/files/26193367027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0496/0676/files/forofogijatigota.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A8 5272 bytes
SHA-256: e6248731de4e5dfbdaf44cbe4ab08b58f622de117b903f991b0e7c55a68bea9f
font_01_sfnt_off0000826c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x826C 9920 bytes
SHA-256: c361fc50c265bb8342eb40edf1e3e987ad0048dfd28645bfac6057d882cf8415