Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e508fc4c453810…

MALICIOUS

PDF

73.2 KB Created: 2020-07-24 10:25:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e54d6f248d2195b79be18f3dfd197b68 SHA-1: ad5caf243f29f11a2b81e3ac494eed9d4aadbbc4 SHA-256: b1e508fc4c453810123afefcb392a46cbd6e22e8a4b0874b50c6756f2a418423
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to traff.cc, a known malicious domain. It also features a large number of external PDF links, many hosted on Shopify, likely as part of an SEO link farm to improve search engine ranking for the malicious content. The ML classifier strongly indicated maliciousness, and the PDF structure itself is suspicious due to duplicate object bodies.

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/wb?keyword=unlimited%20power%20in%20urdu%20pdf%20download In PDF document text
    • http://files.ferretsandfriends.org/uploads/1/3/2/8/132814146/wagata.pdfIn PDF document text
    • http://files.memorylanebnb.com/uploads/1/3/1/6/131606125/3635187.pdfIn PDF document text
    • http://files.josie-johnson.com/uploads/1/3/1/6/131606674/tazenagamol-guzixadakufe-juwixuzeno.pdfIn PDF document text
    • http://files.wrbtrailway.com/uploads/1/3/1/3/131382491/vitojonakegu-woful-rerapeve-dujivowuluzipum.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/1/0428/7938/5766/files/nalubagug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2902/0317/files/76471898826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8921/6167/files/43801811995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/mexenesezifup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/zojijenepilifilola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3480/4375/files/98403829388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0922/0501/files/kafimojodogosuzumokuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6411/2805/files/daximaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7738/6911/files/89919721985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/pimonepid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/78390509936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/67408285059.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 3

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_off0000e358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE358 4972 bytes
SHA-256: 11be394bb24c08654b633dfdb8d59ee6279d130b1e3ea3742e5b0dc55a2f0a6f
font_01_sfnt_off0000f42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42E 10300 bytes
SHA-256: 95b6306c6bf283217bf2d25e9ebc987912b932a16264b26ba9c5000c265b35a9

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