Malicious PDF — malware analysis report

Static analysis result for SHA-256 84c84f3f3877ca48…

MALICIOUS

PDF

90.5 KB Created: 2021-06-12 00:49:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9cba50b81f5d5ddb7aeab9a934f09f6 SHA-1: 7f546643541572c9e48ba93828960b3887f77392 SHA-256: 84c84f3f3877ca48e45d7ad5f496666a7fe2bc64739af68ad1cd2d9640dc8f7c
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent link pointing to 'wastran.ru'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link-farming or redirection scheme. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://wastran.ru/pbw?utm_term=pokemon+emerald+groudon+location
    • https://static.s123-cdn-static.com/uploads/4420586/normal_5ff9313de9c48.pdf
    • https://dugemitisij.weebly.com/uploads/1/3/1/4/131409309/baviwusasidusu.pdf
    • https://cdn-cms.f-static.net/uploads/4454286/normal_602254ed753db.pdf
    • https://cdn-cms.f-static.net/uploads/4477873/normal_6022f57a52689.pdf
    • https://cdn-cms.f-static.net/uploads/4379034/normal_601b5b6210c71.pdf
    • https://cdn-cms.f-static.net/uploads/4386365/normal_60108de3abebd.pdf
    • https://cdn-cms.f-static.net/uploads/4388833/normal_6021bd7d9f2a8.pdf
    • https://static.s123-cdn-static.com/uploads/4381094/normal_5fedd6189fd91.pdf
    • https://powudeli.weebly.com/uploads/1/3/4/7/134772307/nimeg_reliwulesakabex.pdf
    • https://static.s123-cdn-static.com/uploads/4375356/normal_5feb1f93b9f25.pdf
    • https://lewovabarififu.weebly.com/uploads/1/3/1/4/131453312/sutemesama-zesupo-jigifime.pdf
    • https://voxonevixes.weebly.com/uploads/1/3/4/3/134383310/1505457.pdf
    • https://gewavidabu.weebly.com/uploads/1/3/0/7/130775927/feseredenukojejojuge.pdf
    • https://static.s123-cdn-static.com/uploads/4392442/normal_5ff530ee436b0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/ea9e4b9e-d3ee-43b6-b546-5979ee5248f7/rezek.pdf
    • https://uploads.strikinglycdn.com/files/fe1ba315-7f4a-4d11-a77d-c9caba9f6cc9/monster_in_paris_full_movie.pdf
    • http://lifelekufa.pbworks.com/f/calculate_the_average_atomic_mass_of_bromine_atom.pdf
    • http://namikikis.pbworks.com/w/file/fetch/144778188/ravomalupi.pdf
    • http://jifesepapo.pbworks.com/f/how_often_do_i_need_to_have_my_septic_tank_cleaned.pdf
    • http://xalomuzavege.pbworks.com/f/harsh_mohan_clinical_pathology.pdf
    • http://duziruromeja.pbworks.com/w/file/fetch/144577665/pixel_dungeon_en_espaol_apk.pdf
    • https://uploads.strikinglycdn.com/files/171faf31-e6c9-45af-932c-0ea36a9a8a23/naxewuluvemigenageduvam.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f26b.bin
477f422661d67a713c616ba47d82d39120745083bd044bd8b7663599b9382d6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF26B 4432 bytes
font_01_sfnt_off00010204.bin
1a6e57f05adef572f89387f4196911460f12d0c1678290bc1be5c9ed433a2992		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10204 5028 bytes
font_02_sfnt_off000112f6.bin
adc9ff0e4d046527af8ae13989e56ae199d0dc25fa89950f203cad00844f1fca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112F6 11276 bytes
font_03_sfnt_off0001387b.bin
fb09c764af2da29dcd1400a6d7077e59cbae054cb92185a2e15c15daf89e4388		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1387B 16176 bytes
font_04_sfnt_off00014d91.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14D91 4324 bytes

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