Malicious PDF — malware analysis report

Static analysis result for SHA-256 155db621359d51d1…

MALICIOUS

PDF

41.2 KB Created: 2020-08-04 04:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6dff3deaef8c34bc517920df400707ab SHA-1: 60d4c687f6b12ac82b1d88c8a6ab90b76773ec2e SHA-256: 155db621359d51d1ac657c948534ec26695e9e54303113a6b6ca9052031d8cb1
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a redirector link to 'ttraff.com'. This suggests the document is designed to redirect users to malicious infrastructure. The presence of numerous external PDF links further supports the SEO link farm heuristic, indicating a potential attempt to distribute malware or conduct phishing by disguising malicious content as legitimate documents.

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=sample+of+formal+letter+writing+pdf In PDF document text
    • http://files.royalcottagellc.com/uploads/1/3/0/8/130813111/sedudebew.pdfIn PDF document text
    • http://files.pershoredeli.co.uk/uploads/1/3/0/7/130740363/3e32b.pdfIn PDF document text
    • http://files.seakayakbelgium.eu/uploads/1/3/1/4/131437385/xitunirovogabiri.pdfIn PDF document text
    • http://files.ascendit.org/uploads/1/3/1/4/131437886/jaxavanuveba.pdfIn PDF document text
    • http://files.lockmangenetics.com/uploads/1/3/0/7/130775383/nizejab.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/1/0435/4818/0634/files/nabutagubozunerexofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/32104292690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8374/2884/files/nikitojerapilatamulavij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5163/9196/files/2259675809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2122/8442/files/7863512699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3460/5728/files/vunaxilowiwerujekexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1723/8685/files/3268350132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1880/3605/files/91556077070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/96335731607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/vedatepimazusatir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3902/3526/files/vumefiviji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/47448150124.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_off000063aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AA 5376 bytes
SHA-256: e7cd87b5fb93fadd67327d5bcdc1a2b4ac894c6c3c05d29098ab041962a7cd41
font_01_sfnt_off000075ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75EF 9840 bytes
SHA-256: 608cd6113349c3a1a26df0371e3545f0400299df93007add4f8c66cc97f34562

Open this report in the interactive analyzer, or submit your own file for analysis.