Malicious PDF — malware analysis report

Static analysis result for SHA-256 39f3e2eced7ad1d4…

MALICIOUS

PDF

49.9 KB Created: 2020-07-28 11:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4071f7ac503634380ef04ac7c1c1f3c5 SHA-1: e1904c2a5982d6460cdffd36b26b832beae56bf0 SHA-256: 39f3e2eced7ad1d40dbbb4696906ad4e82118ad0a5e0b71e103424d9e81996a9
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting PDF files. One critical heuristic indicates that the document links to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'wireless home phone with answering machine', suggesting a lure for potential buyers. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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=wireless+home+phone+with+answering+machine In PDF document text
    • http://files.ornamentsofexpression.com/uploads/1/3/1/4/131455883/vojosa.pdfIn PDF document text
    • http://files.palmdigital.org/uploads/1/3/2/6/132695339/dovirak.pdfIn PDF document text
    • http://files.jieunjunekim.com/uploads/1/3/2/6/132681492/vabugana.pdfIn PDF document text
    • http://files.mobarts.org/uploads/1/3/1/4/131437161/zumusitu_paridepuvele_rovub_tosurozuw.pdfIn PDF document text
    • http://files.changinglungcancer.com/uploads/1/3/0/9/130969825/e1c129c6c141512.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/1/0432/3603/2680/files/6606027263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4464/0667/files/julidazowofirugojegam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/woburorofinuxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/zukakifofekerejudatanode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/59843135000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3384/4119/files/38190087182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9799/0055/files/walijipokomabafesiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8583/1070/files/kususamarerutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/bewokujubiwidinadozefoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/12794706506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7102/7865/files/57340914418.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_off00008341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8341 5240 bytes
SHA-256: c20c0e299927904cc4ba934a66c79141a27406147e7fc9c26d715f41cccbfef4
font_01_sfnt_off000094f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94F8 10948 bytes
SHA-256: 3e4b198ff058d7798c691ed84fab78c39ad9e22e02ef87d6bfb1faf5507a9dcc

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