Malicious PDF — malware analysis report

Static analysis result for SHA-256 2590e7f24e1e0235…

MALICIOUS

PDF

83.2 KB Created: 2021-03-17 13:46:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a6bf596f2d78928843b0df7557db0a05 SHA-1: bd3d63c9663c604b74a1fcc6df9d990bb18003d5 SHA-256: 2590e7f24e1e0235f7e9a37c1748fec78c735cef0d29344234980809e0140305
194 Risk Score

Malware Insights

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

The PDF contains a link disguised with a lure related to 'Euro truck simulator 2 guide', directing users to a known malicious redirector. This strongly suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to lead to a second-stage download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=euro+truck+simulator+2+guide In PDF document text
    • http://byt-upak.ru/talakouqnx7.pdfIn PDF document text
    • https://girosiwubu.weebly.com/uploads/1/3/0/7/130740458/826469094088b.pdfIn PDF document text
    • http://premiumpornclips.com/313524471931pc3b.pdfIn PDF document text
    • http://contact-git.top/swann_view_camera_power_supply90lbp.pdfIn PDF document text
    • https://bifukedupojuxi.weebly.com/uploads/1/3/4/4/134498794/e45490f74ff5805.pdfIn PDF document text
    • http://zugasanuko.getenjoyment.net/bearing_number.pdfIn PDF document text
    • http://sodahq.club/my_system_and_chess_praxisz67jy.pdfIn PDF document text
    • http://zomosidotewe.sportsontheweb.net/how_many_beats_in_notes_for_music.pdfIn PDF document text
    • https://lekaretuzej.weebly.com/uploads/1/3/0/7/130738752/xapib.pdfIn PDF document text
    • http://malanefire.sportsontheweb.net/whirlpool_thin_twin_take_apart.pdfIn PDF document text
    • http://betmoy56.com/bseb_tet_2019_admit_carddjpyy.pdfIn PDF document text
    • https://xusalifur.weebly.com/uploads/1/3/4/1/134131705/16d9e9f397.pdfIn PDF document text
    • https://maxawoxemun.weebly.com/uploads/1/3/4/6/134615094/wevutu.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/piwupevivotixi/coronary_artery_bypass_grafting.pdfIn PDF document text
    • http://popofisofol.myartsonline.com/xuroluneza.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/12961345856.pdfIn PDF document text
    • http://pevogikuxupeja.onlinewebshop.net/dotanawamoniritokuzo.pdfIn PDF document text
    • http://fidalanono.myartsonline.com/acer_aspire_e5_specs_and_price.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/math_worksheets_fractions_word_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e32099e-d834-4a9f-939f-b75baa193b4c/d_d_beyond_combat_actions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89aa1fb3-16a1-4ac6-9007-ce7a8ecf51e5/medical_case_report_abstract_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99db5f10-d272-4544-a3a4-97aaa250fe75/63056929589.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/air_waybill_blank_form.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/chitta_punjabi_song_ringtone.pdfIn PDF document text
    • http://nononulavojiki.myartsonline.com/xizijexemaw.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_off00010832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10832 5412 bytes
SHA-256: 1b6c491f5b9eeeb1ae1bfb178bca33191f17d2431076c7f7c796d5aad8c0b29e
font_01_sfnt_off00011a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A8B 10672 bytes
SHA-256: 073c1c382550a23f60af885d41a08228544700bb433ccd936d9db62488c4856a