Malicious PDF — malware analysis report

Static analysis result for SHA-256 902422e377e5c5ac…

MALICIOUS

PDF

44.5 KB Created: 2020-08-01 06:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36d96dd768e695c4f0c7948a86050fa1 SHA-1: 26db5daa5c05fa0c84e7707778e617313512ec60 SHA-256: 902422e377e5c5ac4dd11566496b311dcc99dce21adbeae931d879da72765f6a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to PDF conversion and a URL that matches the malicious redirector. The presence of many external links, including to Shopify domains, suggests a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted, but the primary attack vector appears to be directing users to malicious URLs.

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=convert+color+pdf+to+black+and+white In PDF document text
    • http://files.djrisen.com/uploads/1/3/0/7/130775109/gulovesovozitixu.pdfIn PDF document text
    • http://files.drrjbattechiropractic.com/uploads/1/3/0/8/130873941/barigox.pdfIn PDF document text
    • http://files.sommerscience.com/uploads/1/3/1/3/131382141/jigifupazizikolimoxo.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/1/0432/4936/9252/files/92265200213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/fejasusit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9299/2410/files/juxanod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/59414839202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0490/3069/files/tefebemuzivojobudunenod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuwofomakilaxenifotet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4468/3432/files/94416221088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/matplotlib_pie_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/17074543685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5769/2315/files/11059999938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/80548303458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/latafona.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 3

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_off00006fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAE 5324 bytes
SHA-256: d82f2179a329003a73fffec3bc048c92fddbe529f73e5fb1a7d8d3ccc9288735
font_01_sfnt_off000081d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D7 10388 bytes
SHA-256: 08b171174a07e5e489120376a877e995becf4fcaaabc83ad31b7217912baa969

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