Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a1b29efb6f4f7a…

MALICIOUS

PDF

68.3 KB Created: 2021-02-22 07:22:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 263c4ef5d58350136a48c16dc1d0cbe2 SHA-1: ebd808556c3b70cd16aa50a32e22f94fdbd7b668 SHA-256: 06a1b29efb6f4f7a9d2bbb08e665eba0397872b87c9ff36ffb03b56bbc81cadf
214 Risk Score

Malware Insights

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

The PDF contains multiple links, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to a 'g-shock military watch'. The presence of numerous external PDF links suggests a link farm or a method to distribute further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=dw-9052-1ccg+g-shock+military+watch In PDF document text
    • http://hotsales-com.xyz/kodadivamebubaxisimadikaq6cq.pdfIn PDF document text
    • https://cdn.sqhk.co/fixikumeboga/fTNNUdb/streamlabs_dashboard_not_updating.pdfIn PDF document text
    • https://kimuremosov.weebly.com/uploads/1/3/4/7/134732255/xanefoluvexebet.pdfIn PDF document text
    • http://bonus332.site/xemepufotanes81etz.pdfIn PDF document text
    • https://gotizede.weebly.com/uploads/1/3/2/6/132695714/gotaginolumularafe.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/wB8Y7ia/2_player_horror_games_xbox_game_pass.pdfIn PDF document text
    • http://esportzmlevent.com/bhojpuri_hit_song_mr_jattk4svt.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/bjhijlO/word_crossy_game_keeps_crashing.pdfIn PDF document text
    • https://cdn.sqhk.co/kogujipubap/aji0Gia/bunker_basher_pickaxe_smash_rock.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/habitual_actions_in_reported_speech.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/manual_paper_cutting_machine_15_20.pdfIn PDF document text
    • http://tenefotozefuzuw.rf.gd/what_happens_if_you_do_1000_push_ups_a_day.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/27464635686.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/tudipojiduvefekeve.pdfIn PDF document text
    • http://dokirapuxok.rf.gd/reporting_contaminated_food_products.pdfIn PDF document text
    • http://loluwoje.epizy.com/8424892929.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/11323652467.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_off0000cce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE8 6108 bytes
SHA-256: 3d46afe34b0d667307a1ea05e4ab077a7242857eb8659ff24fed663591bfcea1
font_01_sfnt_off0000e1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1BC 10100 bytes
SHA-256: f3650a4ad9c543ca3ee09395cd995905489c7b27caa680e182c31286fdd08936

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