Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e8e6be923845b6d…

MALICIOUS

PDF

82.8 KB Created: 2021-05-24 20:03:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 6b8b2efe840cc56f61bf6aac8139ffec SHA-1: dab5a6ef41f4865835d40793e1ffe48550302f75 SHA-256: 2e8e6be923845b6de71882cee24bd0e37b19337fa7fceb29ba0e48a7d14aacc0
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable hosting, and one prominent URL suggesting a lure for 'hacked minecraft accounts'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam. While no scripts were directly extracted, the PDF structure and link farm behavior are indicative of malicious document techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://gimoguvi.ru/strik?utm_term=hacked+minecraft+accounts+list PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446490/normal_605520b23830d.pdfIn PDF document text
    • https://vexepediv.weebly.com/uploads/1/3/4/6/134668456/dilav_lisitekonamu_dazavanever.pdfIn PDF document text
    • https://sefidobove.weebly.com/uploads/1/3/4/3/134320077/c42dca27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449395/normal_5fdaff9937085.pdfIn PDF document text
    • https://kutubugovu.weebly.com/uploads/1/3/4/5/134581815/590364.pdfIn PDF document text
    • https://tadonajates.weebly.com/uploads/1/3/4/3/134319020/955ed2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428083/normal_5ff099a8127f2.pdfIn 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://s3.amazonaws.com/bikikanafopavu/94837635126.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/aachen_cathedral_guided_tours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9060b411-5da1-40c6-9674-0115cc3c80c4/how_long_does_baby_leap_last.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/71647185062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9371f17-81b0-48f0-b3a8-1efe57c5ee44/setukazizuwiwovitawewuve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5eb2d77-f331-4838-812b-6bcd594615b8/dot_net_tutorial_for_beginners_w3schools.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb1f8724-a9ae-4b2a-a377-29e778d5d6d7/lonafigod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91ad2714-ba22-4c16-9d93-612429ae9832/30590653092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ede4159d-3ac8-4f00-b331-8cd0b691220d/what_does_it_mean_by_the_word_determine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03279683-66f9-4dbd-95f6-022faec3f7a5/how_long_to_learn_computer_networking.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78d2cefa-3b06-42c8-8220-2cb89a7482bf/chemistry_in_the_community_6th_edition_unit_4.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/dutejebobafabenotokugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abe0bdfd-201e-4dd4-bd07-17a38750c0df/how_much_oil_does_a_2015_chevy_cruze_take.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8596beba-ef2d-41c1-8519-f73970139833/42183840893.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_off0000f82b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82B 5076 bytes
SHA-256: f690328e4a5419c14e36f62e4cb529bd43f4de98ad6020a4c6cbcfe8830d60a4
font_01_sfnt_off00010943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10943 11112 bytes
SHA-256: debdd398738146992d0bca9c77a2ca1f264fd93d515564faf944a0e243b92c67
font_02_sfnt_off00012f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F49 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e