Malicious PDF — malware analysis report

Static analysis result for SHA-256 77cedbe2dd6c175e…

MALICIOUS

PDF

46.0 KB Created: 2020-08-15 17:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 48f99792f91346f894a914c29ccb504a SHA-1: ae538b6455551b655ccee5bee5eb094786641d01 SHA-256: 77cedbe2dd6c175e4749801542995bb82d61c76639eefc7a23a2dc0b4ec24065
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) and a large number of other PDFs hosted on Shopify. This indicates a link farm or SEO spam campaign, likely designed to drive traffic or phish users. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links supports a malicious intent. No scripts were extracted, but the document body and heuristics suggest a lure to external, potentially 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/wb?keyword=reductores%20de%20velocidad%20de%20engranajes%20pdf In PDF document text
    • http://files.pameladvorakblog.com/uploads/1/3/0/7/130776268/bifekow.pdfIn PDF document text
    • http://files.austintatiouseats.com/uploads/1/3/2/7/132712209/ninaku.pdfIn PDF document text
    • http://files.movingcompanyokc.com/uploads/1/3/1/1/131164095/roxutakaladi-relegox-duzimuvub-seralojubipoki.pdfIn PDF document text
    • http://files.chrissychristian.com/uploads/1/3/0/7/130776743/4448540.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/1/0427/5778/3718/files/sagazimubapowegot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/nupetidolarewepele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/93957476739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/25838314673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/36522501619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7046/2883/files/68446384772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3882/5883/files/11127293517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/wurogarewovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/24010944170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0831/9903/files/lowes_anniston_al.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4885/2894/files/set_precision_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7872/7318/files/sumavefet.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 7

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_off00006690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6690 5464 bytes
SHA-256: bd28f2f9b181149eede65545b00171906d1c9a49ce783aff713cb598c8dc81f3
font_01_sfnt_off00007946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7946 16128 bytes
SHA-256: 9ae39c4409faee8c79dcaff76687130f6cb415b41b4c334ceb8737f45f2c6abd

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