Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d9b5a353f0c489…

MALICIOUS

PDF

88.9 KB Created: 2021-03-14 05:47:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 1181803bca91d0b8ae2bce8b6a599199 SHA-1: 8556d319f98814dfc2b137adce42bd8f780d3504 SHA-256: 97d9b5a353f0c489a0236c2ed44e6c490a94b6af3dd62a00808385d7b20271d0
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting, and is flagged by ClamAV as Pdf.Phishing.Trojan. The presence of external URIs and a link farm heuristic suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristics indicate it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://mezovuduw.ru/award?keyword=bastien+piano+for+adults+book+1+pdf PDF link annotation
    • https://dixufewopirar.weebly.com/uploads/1/3/0/7/130775961/794917.pdfIn PDF document text
    • https://mejebepagomuda.weebly.com/uploads/1/3/4/4/134494428/6563727.pdfIn PDF document text
    • http://atomyimperial.ru/karambit_doppler_guideorc26.pdfIn PDF document text
    • https://fexiganariv.weebly.com/uploads/1/3/0/7/130739648/c8d143fe29dda39.pdfIn PDF document text
    • https://wamibujobaju.weebly.com/uploads/1/3/4/7/134716207/wotaxadevotuvuzin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408720/normal_6036ac449d779.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370996/normal_5fc8fb502a604.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470408/normal_5fca9cc97b163.pdfIn PDF document text
    • http://leopolds.space/my_dell_computer_wont_power_one0qo8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495271/normal_601b5528a5170.pdfIn PDF document text
    • https://libuxematofep.weebly.com/uploads/1/3/1/0/131070581/857ae5cda3c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/515ca338-541e-4662-9752-66f07b031c47/guess_logos_level_501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98762cd8-c1f9-44dd-8965-04681c782e3a/topics_in_algebraic_combinatorics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f99304a-e416-4abd-b27b-182c2f1f1142/what_is_the_best_drill_bit_to_go_through_metal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61e8cdde-8b4d-41d2-a3f7-8cc0553661f0/xuvodupevejesupemarugo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30b5584d-d7c1-413d-934c-a703e8568c61/where_is_the_transmission_fluid_on_infiniti_g35.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8b8d0ab-304a-4a21-bf85-4ace8a4d0806/85423540480.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/61623930073.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/batman_killing_joke_full_movie_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6870c41e-57b5-4d61-bda6-68e8550200df/how_to_fix_a_leaking_samsung_dishwasher_door.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a28b585a-8ad3-4f4b-b61e-536464e071a6/38895221316.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/missguided_blue_floral_ruffle_tea_dress.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/airtel_4g_hotspot_device_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f387c5cf-52ba-4c22-9c38-f91c89337773/43006629744.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_off0000f08c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08C 13268 bytes
SHA-256: 09b93d2846caa499d4002b8797cc390b5ae77d7eb0d53691a1b1b895cab5ea72
font_01_sfnt_off00011b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B5F 5340 bytes
SHA-256: ceeaab019c9d72a76e37b0dae8f04edfd0ff91ef907edc619eb9a87468a976c2
font_02_sfnt_off00012d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D95 11020 bytes
SHA-256: 5a8c69219d57027c4598e04c180a4d17731d31ad716301a10f734c600eceb240

Open this report in the interactive analyzer, or submit your own file for analysis.