Malicious PDF — malware analysis report

Static analysis result for SHA-256 98a57a6209e7c12f…

MALICIOUS

PDF

75.9 KB Created: 2021-06-11 04:57:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a3646807778f447e1a85a58585702595 SHA-1: 68e37481079a3bac431ce8bac9b203fb518a8044 SHA-256: 98a57a6209e7c12f1f7d1419851e53cde3c43081995264c883812b3a1d420d80
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting it is part of a link farm designed to redirect users to malicious sites. The presence of 'Messenger lite 2020 apk' in the document body, combined with the numerous external links, indicates a likely phishing or scam attempt to trick users into visiting potentially harmful websites. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • 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://pixomot.ru/pbw?utm_term=messenger+lite+2020+apk PDF link annotation
    • https://magifoxokepo.weebly.com/uploads/1/3/6/0/136053300/5994234.pdfIn PDF document text
    • https://sojimivur.weebly.com/uploads/1/3/4/8/134883767/watumaxozibeju.pdfIn PDF document text
    • https://wulidinuwiniz.weebly.com/uploads/1/3/5/3/135326152/3d43a62.pdfIn PDF document text
    • https://xupumoga.weebly.com/uploads/1/3/1/1/131164417/wemeji_guxekob_zifobup_tadiseziw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472206/normal_606b47b897cd5.pdfIn PDF document text
    • https://kavawemufelatat.weebly.com/uploads/1/3/5/3/135394651/wefuku.pdfIn PDF document text
    • https://wuwonemuv.weebly.com/uploads/1/3/4/5/134589345/4b099794ac2946.pdfIn PDF document text
    • https://zopoxetofosifa.weebly.com/uploads/1/3/4/8/134863155/bizajagelijiso-vuverawaruv-zuvovozif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381547/normal_606a9eace5d9c.pdfIn PDF document text
    • https://wikifezetusu.weebly.com/uploads/1/3/5/3/135306480/a6081627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453332/normal_602b940dcb6f0.pdfIn PDF document text
    • https://vorufiduwesonuf.weebly.com/uploads/1/3/5/3/135314955/027e630c.pdfIn PDF document text
    • https://penabapemuzoji.weebly.com/uploads/1/3/1/4/131453208/lopogikofu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449001/normal_5ff895ee008d2.pdfIn PDF document text
    • https://xigogedamexov.weebly.com/uploads/1/3/1/3/131384098/8a8f66c8fe48.pdfIn PDF document text
    • https://finikepimu.weebly.com/uploads/1/3/4/0/134017618/b41dda.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/fbff07fa-2a02-449f-9730-8706c45c8a1e/48748827296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19d99ed3-87aa-42a0-a5a7-7cf192d7fec0/epa_inspector_wiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbbd3e7a-9502-47df-8227-1a4ffffe0b49/race_in_america_matthew_desmond_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d3121e6-65d3-41eb-96f6-865ee7c457c1/me_divierto_y_aprendo_en_preescolar_2_libro_del_alumno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3a7d9e7-f2a1-4b07-aaaa-b7b98183e082/shark_-_ion_robot_app-controlled_robot_vacuum_-_black_navy_blue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bef75e59-7838-4521-9040-c65b2bac3aab/92711745406.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/895560b5-6487-4912-8ea6-a5b6174c2dfc/57935082760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf528640-79e3-497e-b9da-a4cf458d04f8/41032424889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a52b0f1e-ae3a-4516-8e2a-09dba7f0a1b1/ingersoll_rand_ssr-ep150.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/635e422a-1dab-4e45-b50b-f44b04892f0d/baldurs_gate_3_full_release_date_pc.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_off0000e8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C6 5328 bytes
SHA-256: b72db27750d8aebb850de1e50f13f3e42b1fbb49fa1ed5e740aa15f18ecdbd9f
font_01_sfnt_off0000fb07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB07 12208 bytes
SHA-256: beccf82b8a33e04e3704f4757831fd8e6d06aa30d644dcaf82aec9a2d4238621

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