Malicious PDF — malware analysis report

Static analysis result for SHA-256 7463840a9201ba67…

MALICIOUS

PDF

76.3 KB Created: 2021-05-08 17:58:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ae1d51f6d989369e07204fa8a1242366 SHA-1: 1fcac28d2d2e37cd2e87b2de65cba0ebc3f161f0 SHA-256: 7463840a9201ba67cc509ab5b10eb70de0256ad31e333604d48693cc893d2591
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://crophysi.ru/strik?utm_term=pokemon+movie+2000+the+power+of+one+full+movie+in+hindi PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375509/normal_5febe1ae595ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505363/normal_5fffe689b5f89.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467910/normal_5fc72873de4ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377407/normal_5fca7de4e00b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478664/normal_603ad5bc2979f.pdfIn PDF document text
    • https://xekawipafamut.weebly.com/uploads/1/3/4/3/134328312/vonat.pdfIn PDF document text
    • https://nevofegef.weebly.com/uploads/1/3/4/8/134851200/fc2ed235.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393751/normal_605f3ceeb0947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_604957362a188.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467285/normal_5fe2152101a83.pdfIn PDF document text
    • https://gikudinok.weebly.com/uploads/1/3/4/7/134730402/bozonokerudoruv-papovigabugu-kefasijole.pdfIn PDF document text
    • https://bomexufimewaw.weebly.com/uploads/1/3/4/5/134517434/pirewob.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/wudibirewuduto/how_to_share_a_mov_file_on_facebook.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/90931548491.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/asrock_970_pro3_r2_0_cpu_support.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/crown_xls_1000_vs_1002.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94f0bd74-3229-4c84-83f9-7f0464f83aca/mercury_outboard_9.9_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/25308314389.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/toefl_academic_reading_passages.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/gubuwagisoduboz.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/how_to_stop_dating_a_girlfriend.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c483be0c-8e74-4d44-90e1-a17efe021f42/how_to_replace_battery_in_casio_pathfinder_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/braille_academic_reading_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/medical_terminology_arabic_english.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C3 5384 bytes
SHA-256: ba1c212a8022b63a457fcf589eb70a6cd108df5e05152e50ce9517501f33bd0a
font_01_sfnt_off0000fc09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC09 11660 bytes
SHA-256: 727f73f9aa6e070e62d950e2609c290579fbb5a58d2a372ff12164ba3d3c192f

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