Malicious PDF — malware analysis report

Static analysis result for SHA-256 60bb6d381b226c65…

MALICIOUS

PDF

119.1 KB Created: 2021-02-27 02:20:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a762144ca11b420d9bdc4407e85bb201 SHA-1: d4a42af8cfd3e3b7a01742150bb263aafaaf05aa SHA-256: 60bb6d381b226c659dcbf38964f4c39a6357e3e2fd0f37f0e391a8a8f677ddc7
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, indicating a link farm or distribution mechanism. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a malicious document, possibly leveraging embedded JavaScript for exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://kuzutuzo.ru/award?keyword=the+deathly+hallows+summary PDF link annotation
    • https://cdn.sqhk.co/taxodisilif/fhfpgiu/gamehunters_spades_royale_free_coins.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/Mhdfjf5/10329739845.pdfIn PDF document text
    • http://ladukusuga.22web.org/33047276032.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/house_on_mango_street_quotes.pdfIn PDF document text
    • https://zidimegaga.weebly.com/uploads/1/3/0/9/130969389/gajilorobigi_runefinenit_lijanu_jokowazogaz.pdfIn PDF document text
    • http://gonugotez.22web.org/app_china_apk_pc.pdfIn PDF document text
    • http://kidepokapila.22web.org/34259553630.pdfIn PDF document text
    • https://cdn.sqhk.co/ravuviwidi/ggcgvI4/kobimopisekirozejoxadaju.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/who_is_veronica_roths_agent.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://fuvuvadut.onlinewebshop.net/83271667787.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/govilawirozebazugijebovat.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/animation_app_for_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/sea_of_thieves_pc_microsoft.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/word_document_venn_diagram_template.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/how_to_find_each_interior_angle_of_a_regular_polygon.pdfIn PDF document text
    • http://toberijalija.rf.gd/29532390161.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/is_eso_worth_it_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/37878722977.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_off0001878b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1878B 5208 bytes
SHA-256: 70a700b670eac22c27a4f194df65f80de1b8ff82d2202ef378ea83e5055e7d4d
font_01_sfnt_off0001992b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1992B 11272 bytes
SHA-256: 4eca749c691d9e9f211474d8d2c1d6586e5c5399ca71ae96f0ae6adfcfb2752d
font_02_sfnt_off0001bf07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF07 4000 bytes
SHA-256: 87044ef714387d5280456e7f48840af8ba8b8326253a6a8aabee6a132044e5c5

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