Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa7d0732fddb8f7…

MALICIOUS

PDF

77.9 KB Created: 2021-04-05 03:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80d5f3b248f18705e59f6735f01834a9 SHA-1: 5125d7792cc55c39e146606704c77c7ae8213ef0 SHA-256: 7aa7d0732fddb8f755c486455c4b4c1cbf3b5d00a34e8a374cb5848d960f8788
176 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are SEO-focused, suggesting an attempt to generate traffic or host malicious content. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, a common tactic in phishing and tech-support scams. While no scripts were explicitly extracted, the PDF structure and numerous external links point towards a malicious intent, likely to facilitate further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://jumiwimov.ru/award?keyword=wells+fargo+mortgage+application+pdf
    • https://cdn.sqhk.co/nosimasiv/djahcP9/don_rush_hit_song_clean_version.pdf
    • https://static.s123-cdn-static.com/uploads/4372707/normal_5fd04b339d43b.pdf
    • https://cdn.sqhk.co/zajagatetode/eBUUtgg/pakujigisosozabajusujop.pdf
    • http://xiguxivevov.sportsontheweb.net/sovowalegusebafomujon.pdf
    • https://kusebavizekofuk.weebly.com/uploads/1/3/4/0/134098677/xevetiniboj-xewebixolejol.pdf
    • https://tererenigi.weebly.com/uploads/1/3/1/4/131405956/5675972.pdf
    • https://cdn.sqhk.co/levowexesu/fgejjhh/pocket_rally_full_apk_indir.pdf
    • https://cdn-cms.f-static.net/uploads/4483336/normal_6023e3c945ef1.pdf
    • http://lipexifinidoda.scienceontheweb.net/rinobopasatodanefafolij.pdf
    • https://cdn-cms.f-static.net/uploads/4407102/normal_602945bc9af6b.pdf
    • https://lebamemodeli.weebly.com/uploads/1/3/0/7/130776101/4b3b9f8.pdf
    • http://nawabopebi.iblogger.org/carmina_burana_lyrics.pdf
    • https://cdn.sqhk.co/vifamepupib/jgfifii/hearts_of_iron_4_gameplay_mods.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xoguwavosuje/jowupabegazeb.pdf
    • https://s3.amazonaws.com/ligole/22592242889.pdf
    • http://nisetekotixob.myartsonline.com/63724820418.pdf
    • https://s3.amazonaws.com/zozofufulolig/padoke.pdf
    • http://lakekawe.rf.gd/aptamil_pepti_2_feeding_guide.pdf
    • https://s3.amazonaws.com/najipavez/4783648296.pdf
    • http://tifilumiteva.epizy.com/182230603.pdf
    • https://s3.amazonaws.com/rubidokezive/movimiento_circular_uniformemente_acelerado_definicion.pdf
    • http://muvamubas.atwebpages.com/82356092008.pdf
    • http://resutujimi.epizy.com/dodepuzikidipudobowana.pdf
    • http://samesesodore.onlinewebshop.net/zotolarugedugojujaxi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f185.bin
6ddf49efdce804362199bf5470856886d50028644e8213b18c2dd0fb3f6425a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF185 5488 bytes
font_01_sfnt_off00010428.bin
2751650c205b864b894f7f5762639cf3d18d466e88e7842903342e1cee31b7e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10428 11636 bytes

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