Malicious PDF — malware analysis report

Static analysis result for SHA-256 71049e3ed994256f…

MALICIOUS

PDF

65.8 KB Created: 2021-02-28 08:45:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2ef7bcb1d745fad261aa9566ffcd8822 SHA-1: daf8b45ff5f4b4c9fc9e4ff8ec5c55f220d5ca9b SHA-256: 71049e3ed994256f42d72f8bf85828805d6de2ebd88adb52b779e74469e8234c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, pelibifir.ru, which is likely used to host a phishing page or a second-stage payload. The document body, though partially corrupted, contains keywords related to stove parts, suggesting a lure to attract users interested in such topics. No scripts were extracted, but the presence of external URIs indicates a potential for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/strik?utm_term=vermont+castings+resolute+coal+stove+parts PDF link annotation
    • http://filfex.ru/neborazosoxikujiclue3.pdfIn PDF document text
    • http://autoport76.online/honda_astrea_grand_service_manual99xfg.pdfIn PDF document text
    • http://golixudib.mypressonline.com/the_rime_of_the_ancient_mariner_very_short_summary.pdfIn PDF document text
    • http://dotenipago.medianewsonline.com/are_any_vampire_diaries_characters_in_the_originals.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/85124530664.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/17995945595.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/purufiz/16859546560.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/men_s_fashion_gift_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/61045259896.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/48814255291.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/how_to_control_thermal_comfort_in_building.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/a_brilliant_young_mind_mp4.pdfIn PDF document text
    • http://magegefopo.atwebpages.com/97741260895.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/acronis_2018_mac.pdfIn PDF document text
    • http://deroselewem.epizy.com/gewufagagexoza.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 8

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_off0000c6f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F1 5276 bytes
SHA-256: 92296c5b12ece6fa9a1be410f439ca01314fbb498d98e6a64fe7b8b15d2dec4a
font_01_sfnt_off0000d8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DB 9824 bytes
SHA-256: 4e9a5f45fca6ee86975cad311b5b0ea1114a59e3fcc566f19261c681a176739b

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