Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9f61be7054116ec…

MALICIOUS

PDF

92.7 KB Created: 2020-12-31 23:45:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: bbee461aa51321356c4189466676dc30 SHA-1: 26b67c55a915d776b84b8aa49a68e3e4502c771b SHA-256: f9f61be7054116ec49a7a24069920ad1b6436dc1c49187b6c71bda3ce9664261
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, pointing to various domains. One of these URLs, 'https://trafffe.ru/123?utm_term=funny+things+to+say+to+a+girl+on+tinder', is directly embedded in the document body. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/123?utm_term=funny+things+to+say+to+a+girl+on+tinder PDF link annotation
    • https://cdn.sqhk.co/sepufaziru/cTW7ib3/1729139584.pdfIn PDF document text
    • https://rebabamebuno.weebly.com/uploads/1/3/4/3/134355200/guvugelemigasapogaf.pdfIn PDF document text
    • https://wotigutaz.weebly.com/uploads/1/3/4/3/134361511/petajerabanoso_fizizegapi.pdfIn PDF document text
    • https://cdn.sqhk.co/rirodute/nPVieo1/best_custom_jumpshot_for_playmaking_shot_creator_2k21.pdfIn PDF document text
    • https://cdn.sqhk.co/nugutobudan/hiUqjfo/bigifolikadoma.pdfIn PDF document text
    • https://cdn.sqhk.co/majumoros/hbjeihx/74250761002.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/0hjbSg6/92824203524.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450628/normal_5fcb2ccb28f5a.pdfIn PDF document text
    • https://cdn.sqhk.co/ropesuzuruf/ijifgcv/navafijiwuwetedi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/981f97fc-feeb-4e68-865d-509c64eeb1d4/47311581749.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/the_labyrinth_riddle_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/potevip/menards_council_bluffs_jobs.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/85256476212.pdfIn PDF document text
    • https://s3.amazonaws.com/gebaxovudofe/born_free_nighty_night_nursing_light.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/xarazivuvanujebomajolij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74f06d92-b5ae-41e0-a9bf-49ae47618fc3/32367956099.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11284 5144 bytes
SHA-256: 45a7a07bf5aa6f6b2980dff35da5794bb5ebad3eaa78ccced2495671da0e20e4
font_01_sfnt_off000123fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123FC 6988 bytes
SHA-256: 190fbdf794e98bbdc04a861fba39405d21de7224248d74a49954ec0ecf1224c1
font_02_sfnt_off0001366f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1366F 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_03_sfnt_off00013efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EFD 10984 bytes
SHA-256: ed6c61ae892e69e5f60dc20616e0a22072515fbe610494d0fad32868741e0366

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