Malicious PDF — malware analysis report

Static analysis result for SHA-256 065e010b7a867419…

MALICIOUS

PDF

77.9 KB Created: 2021-04-12 17:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bf08cd5e7f651c1c096a796c516c15a2 SHA-1: 4ab7f44e9096808e328bb62e1686497d73071a3a SHA-256: 065e010b7a867419f61b5430549f1e199b099169c6e2775fd7d981135b1bd51f
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/strik?utm_term=autocad+mechanical+jobs+work+from+home PDF link annotation
    • https://kutofepiv.weebly.com/uploads/1/3/4/8/134898103/widetasura.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/jfghFhi/26110685788.pdfIn PDF document text
    • https://futixaxez.weebly.com/uploads/1/3/4/5/134516919/7220908.pdfIn PDF document text
    • https://xelopapet.weebly.com/uploads/1/3/0/7/130775154/lekuvo.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/cNgdgdJ/tixenomunelefobubez.pdfIn PDF document text
    • https://cdn.sqhk.co/rotefuver/kXYiggf/brent_crude_price_live_in_dollars_bloomberg.pdfIn PDF document text
    • https://cdn.sqhk.co/dadirowuj/hPjj7ia/51079286990.pdfIn PDF document text
    • https://cdn.sqhk.co/jivomawufem/ejaHKtn/2d_battle_simulator_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kakovavop/Gih4gfD/today_in_history_wiki.pdfIn PDF document text
    • https://davijune.weebly.com/uploads/1/3/5/3/135315517/regapiwozu.pdfIn PDF document text
    • https://cdn.sqhk.co/siwebove/2838a1S/vertical_jump_training_resistance_bands.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
    • https://s3.amazonaws.com/guwutivupudutu/vagel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc59013b-fe72-491a-886e-78421bf2f82f/74459182703.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a26ed015-ce69-4235-aa8b-e439f2328247/vawajakoxibimekasujebuloj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07fc3d19-b92b-4aac-9775-665ca3d70449/jedubajilovalulunojuxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f255e141-725d-4e77-ac84-dcb63aa1ff93/look_what_i_spy_with_my_little_eye_block_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deff0ef2-7c2b-455e-86d2-9820348b7fdc/lowes_troy_bilt_riding_mower_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91864e99-79a1-473e-a6b6-0814c28bf55e/blood_bowl_2_level_up_cheat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c91bdb48-c041-4f27-8a08-ae4ce4a68ef5/fofipubavonasiwofof.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/48116399876.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/biloela_state_high_school_formal.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/far_side_theme-a-month_off-the-wall_2021_day-to-day_calendar.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_off0000e318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE318 5504 bytes
SHA-256: 490f5eb210233587c8d56d9f5c6cc2e0d5b9c73777d7b32ea70855c31d220b8e
font_01_sfnt_off0000f5ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AC 11312 bytes
SHA-256: b2e343613e5a9f393e4b6508f44a67d0e89ea59090cfa3bcf3c251c459f3c996
font_02_sfnt_off00011c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C11 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e