Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e72d9a87dceef7…

MALICIOUS

PDF

115.1 KB Created: 2021-05-08 00:19:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2361872153a74b8eac3288079e953e70 SHA-1: e41d82570726aa9179d69bac333cda9168fc2d68 SHA-256: c1e72d9a87dceef7ceb20a8881306fd0843c497bbe99e9c0bbee4a0a66d93ca0
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('dugedepap.ru') that is likely part of a phishing campaign. The document body, though heavily obfuscated, suggests a theme related to arguments for the existence of God, potentially as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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=5+main+arguments+for+the+existence+of+god
    • http://kesenirevapovid.iblogger.org/beckett_baseball.pdf
    • http://zozegakipuvi.iblogger.org/assemblies_of_god_constitution.pdf
    • https://cdn-cms.f-static.net/uploads/4370737/normal_6058b1fb82fcb.pdf
    • https://static.s123-cdn-static.com/uploads/4393521/normal_6005d89878e1d.pdf
    • http://wobezal.22web.org/86269790150.pdf
    • http://desofudexe.22web.org/can_you_shorten_swann_cctv_cables.pdf
    • http://xebupado.mypressonline.com/49649093573.pdf
    • https://cdn-cms.f-static.net/uploads/4374835/normal_604906b110ae6.pdf
    • https://cdn-cms.f-static.net/uploads/4474736/normal_6036d1b971d2b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://ketugida.rf.gd/physical_milestones_18-24_months.pdf
    • https://uploads.strikinglycdn.com/files/071ffd6a-b9de-41c3-9b29-ee9da00e3851/nuzazaxobirufijululefujak.pdf
    • http://wepunulirepobi.myartsonline.com/zomakufiletiwixepazu.pdf
    • http://guxivajigiziz.rf.gd/us_passport_fillable.pdf
    • https://uploads.strikinglycdn.com/files/615069f0-5a3c-45fa-ba4c-530e1ee50539/82364574210.pdf
    • https://cce92679-02f8-4621-bf30-918e868c4228.filesusr.com/ugd/1f6d71_d76c50b79cd74cf9aeb9d7b0cc200c4e.pdf?index=true
    • https://5c51e3d7-2896-491e-a255-1b002e356b93.filesusr.com/ugd/5b6ce5_0d83ff2135894563afe925e6c608ab40.pdf?index=true
    • http://gukutimaguvuzum.onlinewebshop.net/66816509890.pdf
    • https://dc5983eb-04eb-4341-be6e-5f763cf8c8d0.filesusr.com/ugd/979c04_0a34ef141026486e8890b21a31b6a020.pdf?index=true
    • https://7835c217-6b95-46a1-915a-76cdebae3fe0.filesusr.com/ugd/debfb4_c085e6e440224687bb38b8e90bafd3d2.pdf?index=true
    • http://gizenelik.rf.gd/how_to_install_netgear_wireless_n300_usb_adapter_without_cd.pdf
    • https://uploads.strikinglycdn.com/files/92ba21f9-6bd6-470d-a4da-4ee209c9eb18/how_to_drain_a_whirlpool_water_softener.pdf
    • http://vavilonogamet.epizy.com/how_to_flip_the_camera_in_a_video.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017933.bin
b3225a315b7079180c20b75d0d57bc770472980caba60d6f8badbe29d9224b58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17933 5380 bytes
font_01_sfnt_off00018b48.bin
66ffc81babcdc6a23ad966e8aee608412f90e996c408a22ede4b33904e5725da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18B48 11040 bytes
font_02_sfnt_off0001b093.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B093 4324 bytes

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