Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b15d7e1860d067…

MALICIOUS

PDF

92.9 KB Created: 2021-03-23 23:57:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 59e432b506a78ca41a824e15b497ae1e SHA-1: 4bf8bcf5062f960412462cbbaecaccea6cfcbd62 SHA-256: 69b15d7e1860d0678ff2da88051943b56f9c65c4411cc0f9a689d9010a3f7a41
156 Risk Score

Malware Insights

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

The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The document body, though heavily obfuscated, contains references to legal procedures and software names, likely serving as a lure. The presence of numerous external links suggests an attempt to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xajibur.ru/strik?utm_term=pursuant+to+federal+rule+of+civil+procedure+34 PDF link annotation
    • http://oneitstore.info/bid_wars_pawn_empire_apk4641h.pdfIn PDF document text
    • https://setibadumizokeg.weebly.com/uploads/1/3/4/8/134880372/bewuto.pdfIn PDF document text
    • https://rimixobavi.weebly.com/uploads/1/3/3/9/133987070/8656890.pdfIn PDF document text
    • https://cdn.sqhk.co/zogowefu/gsjhBjf/amazon_golf_buddy_rangefinder.pdfIn PDF document text
    • https://cdn.sqhk.co/dukoredod/NBNrhfL/her_story_game_guide.pdfIn PDF document text
    • http://dkshlyap.ru/1001_dark_nights_read_onlinekdwhn.pdfIn PDF document text
    • http://pristav.pro/what_was_the_purpose_of_malcolm_x_speech_the_ballot_or_the_bulletm5687.pdfIn PDF document text
    • https://penaxixix.weebly.com/uploads/1/3/0/8/130813526/dabokamorube-fibegazed-jitowavu-kuwotajaguma.pdfIn PDF document text
    • http://ing-cliente.com/yasuo_top_guide_s8u7mv2.pdfIn PDF document text
    • https://cdn.sqhk.co/legexere/hggh5YY/foxawinadodudunun.pdfIn PDF document text
    • https://litiwufedoza.weebly.com/uploads/1/3/0/7/130739575/95d3e4f93bd.pdfIn PDF document text
    • http://brumbum3.xyz/cuisinart_14_cup_food_processor_instruction_videor87r6.pdfIn PDF document text
    • https://cdn.sqhk.co/lilomovetum/BPigphb/divaris_real_estate_reviews.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/kelageketisefuv/five_point_likert_scale_interpretation.pdfIn PDF document text
    • https://ff4d9611-e7ea-45f2-85d3-f0b464ef817f.filesusr.com/ugd/48f461_4249eec7251f488a84bc6a8a3281ca05.pdf?index=trueIn PDF document text
    • https://e9593579-f51f-4dc6-af55-2543ab512b45.filesusr.com/ugd/37952c_a1ba78d5977944ada0bec2b16c1cdeb5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/64904571305.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/hitman_blood_money_google_drive.pdfIn PDF document text
    • https://850a36a1-966c-46c3-86ed-e15bcb5778a7.filesusr.com/ugd/ede58b_9d42c6bb268641038841a41e4237a3f9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wunojipu/live_sports_channels_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/motidewakuvipasuvir.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/mission_impossible_theme_piano_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/boy_scout_cooking_merit_badge_worksheet_answers.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_off00012c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C0A 5460 bytes
SHA-256: 3d0d8111b4d590baededcffbe3b39bf491a5f1b96357f46931e78a274e82df0f
font_01_sfnt_off00013ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EBC 11384 bytes
SHA-256: 2cdec1830e93a31318134960204f27bdf1a3beb1e2d52ebceba88c1d6c3c9090