Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f25af23152174ba…

MALICIOUS

PDF

45.8 KB Created: 2020-08-09 10:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3af8b653610cbc77628742d8338c3c9d SHA-1: 3ed9c0e9ab8647557eb11f5be96f32ec335a74ee SHA-256: 3f25af23152174bad4a7d12e39c035b7085f4431d0342c196d6be84075e0136d
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=basic+techniques+in+animal+cell+culture+pdf'. Additionally, it exhibits characteristics of a link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0431/7279/0427/files/dapobi.pdf' being a prominent example. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to trick users into clicking through to a potentially harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=basic+techniques+in+animal+cell+culture+pdf In PDF document text
    • http://dofavatad.vanvolleyleague.ca/uploads/1/3/1/4/131438641/jinuwenotoxupo_tepapikux.pdfIn PDF document text
    • http://files.schoolontherise.com/uploads/1/3/0/7/130775431/9840034.pdfIn PDF document text
    • http://files.homegrownblooms.org/uploads/1/3/2/6/132695445/fitevi.pdfIn PDF document text
    • http://files.melodicfusion.org/uploads/1/3/1/4/131452959/dalizonelomas.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/1/0431/7279/0427/files/dapobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/chrome_extensions_website_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2016/3999/files/deadlock_avoidance_in_os.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7287/9782/files/kivosodugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/political_theology_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/rufonaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/80012037512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4930/4742/files/12368659506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/59265923311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/47067639773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/6256697195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/97514064485.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7626 5568 bytes
SHA-256: 14c90d11b3a1eec126ce0847c2b7ecc5c37c285db193413eb5b0fc5024e4dbba
font_01_sfnt_off000088e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E8 9616 bytes
SHA-256: 25d81e1e1fa9ab2bebab64385c5928cd29e4451429acc5248e2db41e76a2d904

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