Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c61c1b887c4854d…

MALICIOUS

PDF

47.1 KB Created: 2020-08-15 08:32:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cd0b7da3fee326969dbeb68450b848f SHA-1: 0ed64e28d0d4dc9afb93769a8a5d6248148b9792 SHA-256: 6c61c1b887c4854d56e4d2237fe1c917880906545fa3b4e6e7b4ecc2452e64e4
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and an SEO link farm, suggesting a phishing or malware distribution scheme. The embedded document body text, though partially corrupted, includes a URL that is also flagged as a malicious redirector. The presence of numerous external links, including those to Shopify, further supports the link farm and potential phishing lure.

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/pify?keyword=aristada+initio+prescribing+information In PDF document text
    • http://files.ezcomfortwear.com/uploads/1/3/1/0/131071067/dcf8f50d4c1a7.pdfIn PDF document text
    • http://roten.silverlining-press.com/uploads/1/3/0/8/130814328/jiwufuruxisas.pdfIn PDF document text
    • http://files.robinsonelmwood.com/uploads/1/3/1/6/131636828/livaxabo.pdfIn PDF document text
    • http://files.thelitwritinglab.com/uploads/1/3/1/3/131380008/peluxozadatupet.pdfIn PDF document text
    • http://jaxuta.rachaelbudd.com/uploads/1/3/1/4/131453133/tibikajigotef_xenidalexowov.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/1/0432/8246/4928/files/darafugavij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xikidewutuxazumal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7453/6103/files/chapter_13_to_kill_a_mockingbird.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/rixilozigitojis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/xisogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3461/5719/files/15280305750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/58031228440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/72391161334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5103/0430/files/nezufasisiriluraxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8358/6966/files/topidonugigugoboji.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_off0000768f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x768F 5572 bytes
SHA-256: 24ab2bcad875167502fa58b3232c3bd483f704b0e61f37d6fbc1975c01689412
font_01_sfnt_off00008964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8964 10796 bytes
SHA-256: e44a7bb530213f26a4ecc2dab000cdffba7df09626ffbea2ca227eb82357e586

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