Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ae80ec8c9edce26…

MALICIOUS

PDF

36.0 KB Created: 2020-08-05 11:46:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a2dd83593376d467fd3a951c2c3a55c SHA-1: cd40bd8d1c90bec14ecfc5359c0dde6f06036b28 SHA-256: 6ae80ec8c9edce26d2fa2bc5029b64b07f10b47399fa5b9fbef5d4e7e5d63230
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to a redirector service known for malicious activity. The document body and embedded links suggest a lure to download further content, likely malicious. The ML classifier strongly indicated maliciousness, and the presence of multiple SEO-optimized links points to a link farm or phishing campaign.

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.ru/pify?keyword=august+month+current+affairs+2020+pdf+gradeup In PDF document text
    • http://files.cheshirecraftsmen.org/uploads/1/3/1/4/131406527/wizejufaxusebagazasa.pdfIn PDF document text
    • http://files.rootedandrestored.org/uploads/1/3/0/7/130775845/lefebapisifibamiwapa.pdfIn PDF document text
    • http://files.vulturepeakmines.com/uploads/1/3/1/4/131408899/jufetenekej.pdfIn PDF document text
    • http://files.owjfitness.co.uk/uploads/1/3/2/3/132302870/9149900.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/1/0440/1351/9006/files/kenmore_dishwasher_665_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3016/7202/files/perab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8099/0366/files/19823400724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6504/8214/files/nazab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/iphone_6_landscape_width.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1964/0738/files/82831919458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7526/3909/files/zefitetubijabobopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/buralobopituvogiziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/20645536701.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_off00004bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BDA 5800 bytes
SHA-256: a050cb56d9b8c0229178994054fa8a4ba317d20dc0ef3386ee7af5c6cd18c6aa
font_01_sfnt_off00005f78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F78 10548 bytes
SHA-256: a2b271312e82fdba11fad41b7f5766aa6cee89300e9b30d1753d697d9eae725f

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