Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d30d63a222c4701…

MALICIOUS

PDF

82.8 KB Created: 2021-04-06 21:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: f8d5772b0512e727044c1ebbcaf29a19 SHA-1: 8563ac1c04432da652994783c13e0d893d3056a6 SHA-256: 8d30d63a222c470172e1ee4aceb84e43dfd7af026df8c1f359dfe2f2bad85b0d
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating it is part of a link farm, with numerous external links. One prominent URL, 'https://jottigo.ru/strik?utm_term=how+to+get+your+ex+girlfriend+back+through+text', suggests a phishing or social engineering lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 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.
  • 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/strik?utm_term=how+to+get+your+ex+girlfriend+back+through+text PDF link annotation
    • https://sugulone.weebly.com/uploads/1/3/2/7/132740418/lexaxeludonotad-mikakesi-laxefupelerave-zizenuxuviteb.pdfIn PDF document text
    • https://cdn.sqhk.co/wozovege/cT3iegh/royal_family_documentary_1967.pdfIn PDF document text
    • https://cdn.sqhk.co/jamolipa/gfjfM6D/angel_avatar_dress_up_games.pdfIn PDF document text
    • https://cdn.sqhk.co/sevijeruba/jdQiao3/fairy_jigsaw_puzzle_game_of_thrones.pdfIn PDF document text
    • https://padilokemim.weebly.com/uploads/1/3/1/3/131381900/9697446.pdfIn PDF document text
    • https://kiwogadewabinox.weebly.com/uploads/1/3/4/0/134017617/4e9e0bee3.pdfIn PDF document text
    • https://dubujede.weebly.com/uploads/1/3/4/6/134607356/mavizuzeruzev.pdfIn PDF document text
    • https://telewebejuta.weebly.com/uploads/1/3/1/6/131607630/xegisipanipisil.pdfIn PDF document text
    • https://zogadinarele.weebly.com/uploads/1/3/1/4/131409244/1494772.pdfIn PDF document text
    • https://duditoza.weebly.com/uploads/1/3/2/3/132302736/gosuxizo_masufikogajos_kifutojefixutug_jugowunedivu.pdfIn PDF document text
    • https://cdn.sqhk.co/kikutajaz/gejidjc/top_motown_hits_60_s_70_s.pdfIn PDF document text
    • https://cdn.sqhk.co/tudobele/gghgjdf/digital_speedometer_gps_offline_odometer_hud_programming.pdfIn PDF document text
    • https://zewadozodatigi.weebly.com/uploads/1/3/4/3/134337643/pomomaf.pdfIn PDF document text
    • https://disadoxamegipu.weebly.com/uploads/1/3/4/5/134527150/a88b2a464.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/jukoxisojow/black_and_decker_grass_hog_spool_home_depot.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/craftsman_chainsaw_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/paul_eluard_libert_cm2.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/bomalawokolufamexu.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/defowupasutezetofewus.pdfIn PDF document text
    • http://sonogobujajeva.rf.gd/42171417270.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/zexev.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/givepupizi.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/dozajizopemora.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/what_is_bitcoin_through_cash_app.pdfIn PDF document text
    • http://miwufojo.epizy.com/xizefoda.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/kowuvuwagodozuzun.pdfIn PDF document text
    • http://didigixi.rf.gd/54799654389.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_off00010103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10103 5532 bytes
SHA-256: 11849c33b81bb214ac2cb0b5d723d2105d1e222214d93319e74f45f5f3c3929a
font_01_sfnt_off000113ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113EF 12304 bytes
SHA-256: 04ab0f5a3fb302c26daa7d07589e87fc82f10103da505e7a7033f9cd72d10966

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