Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea5d8fa60bcd1cbc…

MALICIOUS

PDF

41.3 KB Created: 2020-08-09 00:25:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f91c5c4d2f29e5a7bdffe7ce7461b6ff SHA-1: ff0c1e1fa539da16128c1aa8e7eb38bb07eb47ea SHA-256: ea5d8fa60bcd1cbc913e2a838623fb2d531b20b02e5975e7e657b3d66b6f60eb
194 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, with one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are part of this link farm. This suggests the primary purpose is to lure users to malicious sites.

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=cable+pulling+tools+pdf In PDF document text
    • http://files.ksuflashathon.com/uploads/1/3/1/4/131407692/194649.pdfIn PDF document text
    • http://tulokano.vathespian.org/uploads/1/3/0/7/130739024/fugowiropaxiraviva.pdfIn PDF document text
    • http://bevisife.jillamatong.com.au/uploads/1/3/0/8/130874368/xufebut.pdfIn PDF document text
    • http://files.luisriverapercussion.com/uploads/1/3/2/8/132815753/7251730.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/1/0438/1143/8752/files/goxaposuwodeminusakut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voriwatovetizejewadodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/fodegafalokofomulak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/62883291567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/majozomozizitipivexabijan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2145/8853/files/16461351566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6655/5556/files/22084946856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5037/7126/files/spoken_english_conversation_through_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3390/1726/files/nutricion_en_el_embarazo_oms.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 4

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_off000062be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BE 5156 bytes
SHA-256: 30801e192b62f5bb4e575c4315c2a7eaeea15dec39c209110710613b4a58dac2
font_01_sfnt_off00007453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7453 10976 bytes
SHA-256: 14981da15790c8c7310fe98bf59b0bd7fcc37a753f253040369e5a3a26c973bc

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