Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d3a8c8d9d17faa…

MALICIOUS

PDF

93.0 KB Created: 2021-02-21 12:57:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7a657e19968c503ae8d75448ddc371a8 SHA-1: 606d03a7ebc4d21018ea76310167a2079ef90fa5 SHA-256: e9d3a8c8d9d17faa68f91680dbfaf6067e70d9a2ed1b9e352df140d4205e0c1e
156 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, with 'https://topifovav.weebly.com/uploads/1/3/4/5/134595147/janirof.pdf' being a prominent example. The embedded URL 'https://seumenha.ru/wix?keyword=5e+help+action+ranged' further supports the attack pattern of directing users to external sites. While no scripts were explicitly extracted, the nature of the heuristics suggests the PDF is designed to facilitate access to potentially malicious content hosted on these external domains.

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://seumenha.ru/wix?keyword=5e+help+action+ranged PDF link annotation
    • https://topifovav.weebly.com/uploads/1/3/4/5/134595147/janirof.pdfIn PDF document text
    • http://prizinsta.site/85429256960991h8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471719/normal_60307192953e5.pdfIn PDF document text
    • https://cdn.sqhk.co/roweziwamu/gehbiiX/27039371876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417405/normal_6018a2274d09f.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/1PJ4lub/1063388255.pdfIn PDF document text
    • http://argo-tourism.com/how_to_draw_anime_faces_step_by_step_easyvn26i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474736/normal_5fd8af7ab7555.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/iejeijk/rise_up_lyrics_thefatrat_1_hour.pdfIn PDF document text
    • https://cdn.sqhk.co/boxepupovemu/iegdAZc/nasupi.pdfIn PDF document text
    • https://cdn.sqhk.co/tadawatimi/nhjhbij/riwuzixeterozokonulo.pdfIn PDF document text
    • https://cdn.sqhk.co/zisuzunon/iTjbdhi/banned_apparel_bags_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/hcaMBhh/gun_strike_ops_ww2_mod_apk_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/bobimugura/fhf8hjf/condado_puerto_rico_hotels_marriott.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480403/normal_5ff90a3c591f6.pdfIn PDF document text
    • http://italiahot.fun/jspdf_autotable_font_size8zkv7.pdfIn PDF document text
    • https://cdn.sqhk.co/zosiwutu/ijjcQhe/xosefavukolunewita.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001333f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1333F 5188 bytes
SHA-256: 08dfeb5dab0820d5731cdedd423944c7cacdf60584161f042b17d1ddcba7bc80
font_01_sfnt_off000144d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144D8 10000 bytes
SHA-256: 7fcb972af65071bae88b49843041152bb9d7af2bb6dabfd7678cdf5c6d55e5e8

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