Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcb3380f40df2db8…

MALICIOUS

PDF

33.4 KB Created: 2020-08-11 12:57:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c15e31de6c0d399ddc72d362b53265a1 SHA-1: 5313d3a4b292eab5088e67c2cdaba33fcc43283d SHA-256: fcb3380f40df2db87b681cb49550233c29d709a5acd64f00cb19493ebcea399d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, disguised with text related to '5 bedroom bungalow house plans pdf'. This link, 'https://ttraff.com/pify?keyword=5+bedroom+bungalow+house+plans+pdf', is the primary indicator of malicious intent. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, but at least one other suspicious domain 'denaxaxu.stevewelchcreative.com'. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=5+bedroom+bungalow+house+plans+pdf In PDF document text
    • http://denaxaxu.stevewelchcreative.com/uploads/1/3/0/8/130873851/weveparunifeji-kupoj-kaferabe-kanojeradajo.pdfIn PDF document text
    • http://files.singlevacations.ca/uploads/1/3/0/7/130776786/newixatefufokewofiji.pdfIn PDF document text
    • http://files.applesandspindles.com/uploads/1/3/0/7/130775707/d1a72bc0b6c6c4.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/1/0428/9835/8432/files/84005007378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1778/0896/files/68175582825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5890/8584/files/al_quran_digital.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2931/5239/files/60631023899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3789/1482/files/roll20_grid_size.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6523/6895/files/89224593472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/walivokikipap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5864/0534/files/87379957433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/rotuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8118/6971/files/50942803619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/2250869118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2001/6024/files/gafobulolonibubukedopukef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/year_1_maths_addition_worksheets.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 5

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_off000045aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45AA 5716 bytes
SHA-256: 8edcda9bef7fe9822c02375a2773dcfc3f552772da002dac2f94998a631069cc
font_01_sfnt_off000058fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58FC 9308 bytes
SHA-256: e8fd351334b7e8326a6e6224995f501ce026253bfb6c6c2e3e3f6884bb7317d7

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