Malicious PDF — malware analysis report

Static analysis result for SHA-256 5af8bea8339a74da…

MALICIOUS

PDF

46.0 KB Created: 2020-08-11 04:36:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d677afe67c482d14e9585239e39274db SHA-1: 38dc9eda4bd6709933c40f2dd7448c3f456e0a96 SHA-256: 5af8bea8339a74da07b89c8a89dbfc74360d75333cd240bd5f842ae790baea72
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDFs, many of which are hosted on Shopify and appear to be part of an SEO link farm. The primary link redirects to a malicious URL, suggesting a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.

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=bisection+method+theory+pdf In PDF document text
    • http://files.guilfordfoodbank.org/uploads/1/3/0/7/130740323/bepowazenujozo.pdfIn PDF document text
    • http://damav.friendlysedanservice.com/uploads/1/3/2/6/132683014/e60cb326dd9b14.pdfIn PDF document text
    • http://files.connectexperiencewrite.com/uploads/1/3/0/8/130813755/14386.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/1/0431/8589/7627/files/wavabemojim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0311/5680/files/munchkin_boilers_troubleshooting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3825/0910/files/herobrine_s_mansion_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7568/1947/files/altura_uterina_segun_edad_gestacional.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6999/7217/files/nasawimukitifogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7959/6187/files/putatog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3005/9940/files/40134521918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4863/8363/files/mamozivikebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/consumer_buying_behaviour_thesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0731/9974/files/38192116107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/63857944521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4115/2406/files/65646655167.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005aa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA6 5304 bytes
SHA-256: 828366dc4b69b4efb6b3cd93298a9435884a0f33309432b66bc7910ab252aafe
font_01_sfnt_off00006c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8A 12644 bytes
SHA-256: 3878eef5c2b64160e88d1e081cb7a4956680cc7b8efa62924648ad8f2d6088cc
font_02_sfnt_off000095c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95C7 16144 bytes
SHA-256: fb10e5badbbf29d6a05184c763452604a6d256f7c208a2bb674868c670b14a78

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