Malicious PDF — malware analysis report

Static analysis result for SHA-256 19b1f4b51a49141f…

MALICIOUS

PDF

46.2 KB Created: 2021-03-09 02:29:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0025ac5b9b40b0b6f8c78ef9557d420f SHA-1: 51f41d2f88d847800afba4922999339df2be3002 SHA-256: 19b1f4b51a49141f19653ac3636273afa1450cd5b9b0d726bc086dd4bc104985
242 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to disposable domains and redirector infrastructure, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier further support its malicious nature. The document body, though heavily obfuscated, suggests a lure related to 'boarding pass template pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7134

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/award?keyword=boarding+pass+template+pdf In PDF document text
    • https://cdn.sqhk.co/dojozafo/oU8mjcl/gun_zombie_halloween.pdfIn PDF document text
    • http://kovamuwaropepu.getenjoyment.net/fundamental_theorem_of_finitely_generated_abelian_groups_proof.pdfIn PDF document text
    • https://cdn.sqhk.co/mijajijem/HwigFia/sobupegiwekaparanufe.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/jifelebakojesedajap.pdfIn PDF document text
    • https://riluvozig.weebly.com/uploads/1/3/4/3/134380056/zasadekefagerow.pdfIn PDF document text
    • https://cdn.sqhk.co/bisegepamitu/Ngjidia/71373020285.pdfIn PDF document text
    • https://cdn.sqhk.co/govazofaj/jjgcAid/opinions_columnists_articles_and_newspapers.pdfIn PDF document text
    • http://rowaxamapitowej.getenjoyment.net/mathematics_tricks_in_hindi_free_download.pdfIn PDF document text
    • https://tokatukunopiso.weebly.com/uploads/1/3/4/3/134352811/rilokole.pdfIn PDF document text
    • https://cdn.sqhk.co/pumapajewa/dHjbPvY/69790670982.pdfIn PDF document text
    • https://pinababinazu.weebly.com/uploads/1/3/2/6/132695354/4a529ad4609717.pdfIn PDF document text
    • http://joxufovogikera.iblogger.org/ligon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6883bea8-6607-439f-b8de-e4ac568721e1/how_to_unlock_your_zte_phone_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6009310d-6d5a-405b-abb5-3484d4829a35/77471107084.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8163b4e5-6e22-4274-8404-2d63bdadb54b/how_to_do_fodmap_elimination_diet.pdfIn PDF document text
    • http://bovifuxabobi.epizy.com/tofefe.pdfIn PDF document text
    • http://lasedunagikosu.rf.gd/ronekejotipasa.pdfIn PDF document text
    • http://togipumenotu.epizy.com/arcade_game_emulator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96a3f0d5-0ff4-4c61-aa77-433f86e54b9a/33019079167.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/774b172c-5634-4b2f-b079-396e47a8f28f/36691344149.pdfIn PDF document text
    • http://wijopimitiraze.epizy.com/adani_wilmar_limited_annual_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09a42ade-52be-4d24-915b-6b19179cd15a/coping_cat_ages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67d076de-ceb8-44a3-bd0a-1d8215e21b2a/zibibimapepaxinozafog.pdfIn PDF document text

Related samples 4

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

Full JSON: related samples API

Open this report in the interactive analyzer, or submit your own file for analysis.