Malicious PDF — malware analysis report

Static analysis result for SHA-256 6542b7dd6f2a251d…

MALICIOUS

PDF

39.5 KB Created: 2020-08-22 13:41:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ed20d72d7d92295ced55dadf8e22ff49 SHA-1: aa3765867c57242fe6c678556f4f985eb0cc5d50 SHA-256: 6542b7dd6f2a251dd299b5a196a5945c1b107f2cdf95e75cf89a944bcfa8d1a0
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector URL that is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious redirector URL and a benign-looking PDF filename, suggesting a lure for free downloads. The presence of many external PDF links further supports the SEO link farm tactic.

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=showbox+android+apk+smart+tv In PDF document text
    • http://files.pdlphotography.com/uploads/1/3/2/8/132814241/zizusigonoxe.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/1/0428/9835/8432/files/mozesuseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7328/7830/files/38322905764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6335/2227/files/82395698256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/80925519590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/princeton_review_psat_practice_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3830/1594/files/22833903486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2788/9308/files/isomers_of_alkenes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/aadhar_card_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3920/3229/files/77551111452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9799/7991/files/39156322775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/57945066504.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 1

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_off00005b2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2D 5696 bytes
SHA-256: 95cb154cd244459bab3b39a9343bec894af9934a4aa4aee35626e300677a86fd
font_01_sfnt_off00006e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E68 10360 bytes
SHA-256: 31154847fa19a8122e3db8b2d56ec362e2aeb2b0deb9a8a1d3c2d10e056650b4

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