Malicious PDF — malware analysis report

Static analysis result for SHA-256 afaa5957f003d8c1…

MALICIOUS

PDF

79.2 KB Created: 2021-04-22 13:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 8ae41806402ed179ee29811bdf1f1e25 SHA-1: a47007f3f67f7e249ab3c7b80d59485dc7466b26 SHA-256: afaa5957f003d8c1e3f814d4635dd8bd377f87a95b320fd82b493e532c0bb79a
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used to redirect users to malicious websites for phishing or to download further malware. The PDF_SEO_LINK_FARM heuristic indicates a large number of generated links, suggesting an attempt to create a link farm for SEO manipulation or to host a variety of malicious payloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/strik?utm_term=honeywell+th8320u1008+wiring PDF link annotation
    • https://cdn.sqhk.co/guwaloxipete/tOMrYge/android_canvas_clear_color.pdfIn PDF document text
    • https://cdn.sqhk.co/donuvoduvedo/uUiheoA/third_angle_orthographic_projection_worksheet.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/3921315.pdfIn PDF document text
    • https://soluvixam.weebly.com/uploads/1/3/0/8/130873975/a3eb9fe9d8e.pdfIn PDF document text
    • https://tamilazubi.weebly.com/uploads/1/3/4/6/134604156/9585109.pdfIn PDF document text
    • https://cdn.sqhk.co/fopikudapom/jbij1jd/kafijageviwixizutejen.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/SghieBs/nekosijijuzuwomove.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/jdsiTTu/trial_of_the_chicago_7_date.pdfIn PDF document text
    • https://cdn.sqhk.co/xopuxuvop/wkEiahh/15328739797.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wanalovum/52004353355.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1f3f61a-2062-4d12-a373-4de1ea3e45bd/roland_td-4kp_electronic_drum_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d65c925-cebe-4a28-a4ea-f5bb5b99ab87/xejudunisu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fb1d4a9-1742-481b-907b-0dd3eddc47c0/pokunalevatabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95067850-f2e6-49b3-a649-8dfaf80b433c/what_are_the_common_laboratory_techniques_in_biology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7268f2d3-83ff-466c-a93b-6fb7993c9cd3/educational_psychology_books_by_indian_authors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63383fba-2d35-4df5-9b9d-8a290f494986/theory_u_leading_from_the_future_as_it_emerges.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/football_news_app_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57413b89-0bb2-4532-a512-7299570029fa/connect_my_canon_mg3520_to_wifi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef96094b-5e6d-42f0-b183-8a0e20b82ebe/flowers_in_the_attic_movie_2014_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/44084907189.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE959 5280 bytes
SHA-256: dec84ba339b1dc924b0a221330463aa198c0cbf30ecb74e18fd3134f786df804
font_01_sfnt_off0000fb65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB65 11220 bytes
SHA-256: 4b8f1e262e4d98771d8ced72a2e3edf174e3ddf04d7ee0e61d3603d7265ac8ce
font_02_sfnt_off00012178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12178 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3