Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f64b2b748c98c3…

MALICIOUS

PDF

83.5 KB Created: 2021-03-17 19:12:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: bc5d2ec7de0b3ce80575951162cd6cd8 SHA-1: 99929bb245a9026de5ed0c3cd2dd2a61eacefd1f SHA-256: 30f64b2b748c98c33babe4c263ff4fd4e791c36fbad20aba62b13b7d69ebf275
126 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many of which are hosted on disposable domains or link farms. The presence of a 'utm_term' parameter in one of the URLs suggests a phishing or scam attempt, likely to redirect users to malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

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://dugedepap.ru/strik?utm_term=beats+studio+headphones+bluetooth PDF link annotation
    • https://cdn.sqhk.co/nigulavax/gidMlpw/51557484552.pdfIn PDF document text
    • https://komamezumef.weebly.com/uploads/1/3/1/3/131398541/pedasobaponoxo-xaranetotu-xitufe-fimuvudezofiw.pdfIn PDF document text
    • https://worubagazew.weebly.com/uploads/1/3/4/6/134639575/pogadogutad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391642/normal_60241eabaa866.pdfIn PDF document text
    • https://nijuvijoz.weebly.com/uploads/1/3/1/4/131408832/ca26a333d.pdfIn PDF document text
    • https://tekeginisexufu.weebly.com/uploads/1/3/1/3/131381150/8090802.pdfIn PDF document text
    • https://danikobunib.weebly.com/uploads/1/3/4/7/134755608/6856782.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/g0Hhfif/pokemon_cafe_mix_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450864/normal_5fcf18c2ee93b.pdfIn PDF document text
    • https://cdn.sqhk.co/datujisukebe/jbhichg/49957379471.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413111/normal_60464fe0907e1.pdfIn PDF document text
    • https://dakufosaxem.weebly.com/uploads/1/3/4/7/134771611/8180305.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478134/normal_5fce183d3cb80.pdfIn PDF document text
    • https://bafosuronam.weebly.com/uploads/1/3/0/7/130738527/353d3afa0cd5d1.pdfIn PDF document text
    • https://kawutakupilim.weebly.com/uploads/1/3/4/2/134236314/0eeb372a.pdfIn PDF document text
    • https://wufewevaso.weebly.com/uploads/1/3/1/4/131453291/mefewofuwixu-wofolej-fuzipap.pdfIn PDF document text
    • https://cdn.sqhk.co/kukelagalefe/g6Znh7r/angry_birds_transformers_telepods_jenga_code.pdfIn PDF document text
    • https://zivexuxa.weebly.com/uploads/1/3/1/8/131871677/rakelanujup-wolezosodef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383460/normal_602958ebb5330.pdfIn PDF document text
    • http://www.typoland.com/http://www.typoland.com/designers/Lukasz_Dziedzic/CopyrightIn PDF document text
    • http://www.typoland.com/In 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://c8d0f166-86fd-441b-8df5-aa5e6c6c7644.filesusr.com/ugd/f4b3af_9bc2ae92dcfb4652ba42f0c66222ec08.pdf?index=trueIn PDF document text
    • https://2dcb0092-dd22-4cef-90c1-8c398f802bb7.filesusr.com/ugd/ff3115_28c1a48eef54411785b039b0c19cc85b.pdf?index=trueIn PDF document text
    • https://2906c4fa-6ff4-475b-b288-a86ede128d70.filesusr.com/ugd/1b0481_a152cdd018d34bb5b00e5ab53aa24526.pdf?index=trueIn PDF document text
    • https://eaae50f7-3b1c-4f1b-9b3c-e2a48377569d.filesusr.com/ugd/b96e41_6346cdf2a40a4d0da44a92ba97ad73b5.pdf?index=trueIn PDF document text
    • https://5c06e36d-e6a7-492f-989e-88f86e9ca1b1.filesusr.com/ugd/c9ae65_99421fe917d343b2a009cbfc50e9253b.pdf?index=trueIn PDF document text
    • https://22fea36a-5e19-4af1-b4aa-fe6e1efe0ee9.filesusr.com/ugd/b5a188_f43d0f1eb12c4d15ae907d99edfdec7e.pdf?index=trueIn PDF document text
    • https://44879a12-c10a-431c-a98a-7de142752d0f.filesusr.com/ugd/bb4607_c5d05cbe199342d693e347f6cd2e6e43.pdf?index=trueIn PDF document text
    • https://cee4a208-09ac-40e0-983f-4c2cc776acbe.filesusr.com/ugd/5ed537_5fd8da467ae84f179d830332baf66822.pdf?index=trueIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFF 6168 bytes
SHA-256: 9f07a400e75c177e496f395344003d4a7545e118b36bf59d530d47f9bb3550f8
font_01_sfnt_off0000fb9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9E 5024 bytes
SHA-256: f061262ac13663f1323f702bfa84f013211376e2e605c5a75ab6652976c13ae4
font_02_sfnt_off00010c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C96 10748 bytes
SHA-256: 9800b4ea1baeb3e967beadf80d9816f8f0a5f62eb92b367e901022efe6ec6d33
font_03_sfnt_off0001313d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1313D 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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