Malicious PDF — malware analysis report

Static analysis result for SHA-256 74c772782a87b5ff…

MALICIOUS

PDF

76.6 KB Created: 2021-02-27 08:43:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: b3463de68e44177abcecb3ce448c43d1 SHA-1: 58d3bc41582f0ee1f81a4e9a75ee745f0c15ac7d SHA-256: 74c772782a87b5ffe11fd60abd49554b31b4c3627c9acb9624814924b4040279
126 Risk Score

Malware Insights

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

The sample was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs that point to disposable domains and link farms, suggesting an attempt to redirect users to malicious content. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a non-clustered link farm on disposable hosting.

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=supernatural+childbirth+book+pdf PDF link annotation
    • http://varietystore.website/24896106636eg4zl.pdfIn PDF document text
    • http://autokenn.com/wakabawfbely.pdfIn PDF document text
    • http://xilexevu.scienceontheweb.net/the_trial_of_spongebob_squarepants_essay.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/raxalunu.pdfIn PDF document text
    • http://dmdmassage.com/all_pakistan_mapp33z6.pdfIn PDF document text
    • https://nivujetomut.weebly.com/uploads/1/3/4/7/134753784/45143.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/95620842652.pdfIn PDF document text
    • https://nobozemesatib.weebly.com/uploads/1/3/0/8/130874372/sowudaneb-lizinivonajuso-worijidunojufuw-winoseda.pdfIn PDF document text
    • https://vomizovuzib.weebly.com/uploads/1/3/1/6/131637161/63f82cea.pdfIn PDF document text
    • http://all-gopro.com/screen_recorder_software_free_full_version3jtoy.pdfIn PDF document text
    • https://lenexemumuvag.weebly.com/uploads/1/3/1/4/131438583/30099.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/wunozetujavukufawuwenepoz.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
    • http://zudupaxub.myartsonline.com/how_to_change_battery_on_a_polaroid_camera.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/vuxuzovadidod.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/67908925577.pdfIn PDF document text
    • http://sitafefisoju.atwebpages.com/diploma_mechanical_engineering_books_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/elder_scrolls_online_class_race_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/89813768868.pdfIn PDF document text
    • http://fojosotum.myartsonline.com/what_do_monat_reps_make.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_off0000e19a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19A 5252 bytes
SHA-256: fcfd855a326919c228e8f7e1687902a54f43313e94a571f3ca954a5bcab642e4
font_01_sfnt_off0000f359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF359 10432 bytes
SHA-256: 12d3ef8f7d98c9199f43a05843c2797e72016299324b2688dc0f85da44774c10
font_02_sfnt_off000116f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F8 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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