Malicious PDF — malware analysis report

Static analysis result for SHA-256 749063413089e38a…

MALICIOUS

PDF

82.5 KB Created: 2021-04-04 18:54:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6b38c097a9f80a4cfe595bf3162674b7 SHA-1: afefd512fec901ba9e5202958214ead441af60e5 SHA-256: 749063413089e38a688565b2d573fe7a3a0ba654755cefe9699c394c23095051
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification further supports malicious intent. The document body, though heavily obfuscated, contains a search query related to 'Time Warner remote not working with cable box', indicating a potential pretext for directing users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gimoguvi.ru/strik?utm_term=time+warner+remote+not+working+with+cable+box PDF link annotation
    • https://cdn.sqhk.co/wajuletixex/hcgggAL/dungeon_keeper_mobile_challenge_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480383/normal_6047c24536bf8.pdfIn PDF document text
    • https://cdn.sqhk.co/kujaruwajovi/hd8Ajih/sisal.pdfIn PDF document text
    • https://cdn.sqhk.co/setupemup/iPhdgjF/98991273307.pdfIn PDF document text
    • https://rekeboko.weebly.com/uploads/1/3/4/8/134899800/vagiletusokejutojajo.pdfIn PDF document text
    • https://kifezitiwiwafu.weebly.com/uploads/1/3/5/4/135400929/boweluwozigamezizes.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/0iZwjbx/divadisokabobiwazuziwo.pdfIn PDF document text
    • https://pobunusegem.weebly.com/uploads/1/3/4/4/134460984/ff1713ae.pdfIn PDF document text
    • https://cdn.sqhk.co/jujadiziga/ggNrFiB/43877837419.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489852/normal_5feb07aa3de61.pdfIn PDF document text
    • https://jafobepajimo.weebly.com/uploads/1/3/4/8/134881918/5883828.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453550/normal_5fd6292c5cd37.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvaratuji/Dhjjcic/wudovizopunur.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebesoxu/CbT1ghp/everfi_module_5_credit_scores_answers.pdfIn PDF document text
    • https://lexobuto.weebly.com/uploads/1/3/2/7/132740623/filodu-lojipopajofen-fuxozibefef.pdfIn PDF document text
    • https://cdn.sqhk.co/ranetixeba/KYhgBih/real_driving_simulator_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/zumedizojas/Xjhifig/minecraft_new_update_1._16._40.pdfIn PDF document text
    • https://cdn.sqhk.co/xozakatupab/icxfUux/tikejusovuzedomaj.pdfIn PDF document text
    • https://cdn.sqhk.co/puninuzono/fvhilXB/73515236571.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/xamibebulosaxug/74962133144.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/pebidasipadimedijixe.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/4120868739.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/pre_diabetes_diet_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/power_pressure_cooker_xl_recipes_chicken_and_rice.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_off0000f912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF912 5136 bytes
SHA-256: 34ea8c8d388894d72945a9e02c33097bab159ea11a8e63a24cc81d3b685f290c
font_01_sfnt_off00010a6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6A 10456 bytes
SHA-256: 56ad0edd237c7151497e9678dd76be659b47c48698698261c9390a6a3995b4b4
font_02_sfnt_off00012e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E3D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361