Malicious PDF — malware analysis report

Static analysis result for SHA-256 a00098f00bf0cec6…

MALICIOUS

PDF

78.2 KB Created: 2021-03-02 04:57:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7f68b454c2980836492430685d118013 SHA-1: 111a6c827f4fdb5c34d5d5d05444c7be28d1b3a7 SHA-256: a00098f00bf0cec6796ed2fa4adc1d84ea552aa138ec2e6a2d6831a43cf4f43e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9998

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 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://jottigo.ru/wix?keyword=occupied+america+a+history+of+chicanos+pdf+free PDF link annotation
    • https://cdn.sqhk.co/fedelubu/gciagfu/video_call_background_curtain.pdfIn PDF document text
    • http://zedalinebivaxar.iblogger.org/92246548857.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/iTjcijl/vodafone_business_plan_apple_watch.pdfIn PDF document text
    • https://pisekubil.weebly.com/uploads/1/3/4/3/134322001/c825532710046a.pdfIn PDF document text
    • http://wogivodugakovek.mygamesonline.org/51578601921.pdfIn PDF document text
    • http://nosilekexiwot.mywebcommunity.org/kojakemajonoruvuna.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/5hcUihj/we_are_the_crystal_gems_animal_crossing.pdfIn PDF document text
    • https://nozinogut.weebly.com/uploads/1/3/1/1/131164424/347c161e407a3.pdfIn PDF document text
    • https://zosujugopaw.weebly.com/uploads/1/3/4/5/134509911/9929747.pdfIn PDF document text
    • http://xufededubumavif.scienceontheweb.net/best_printable_heat_transfer_vinyl_uk.pdfIn PDF document text
    • https://lufodeku.weebly.com/uploads/1/3/4/5/134586195/6ae07.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/UjiFgik/creature_quest_strategy_rpg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tifavamifikas.myartsonline.com/magic_school_bus_castle_episode.pdfIn PDF document text
    • http://zopegekole.rf.gd/17503350311.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/52057874396.pdfIn PDF document text
    • http://gubadix.epizy.com/avg_antivirus_pro_apk_mobile9.pdfIn PDF document text
    • http://xarujusezofa.epizy.com/42368169079.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_off0000f5a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A0 5492 bytes
SHA-256: b6044f3d587183b7dcdf93acc64ca0873c4d87d50bee61fde8c0b936e891c21e
font_01_sfnt_off0001082a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1082A 10196 bytes
SHA-256: 8acd603de0c10f18473338cd6fbad2c787fbd461ad6c4ec3f75bd9fdf375aa66

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