Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb45f9e940e3b5ab…

MALICIOUS

PDF

79.6 KB Created: 2021-03-21 08:07:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6dc664d56955e5c77ad7a0d59594900b SHA-1: 7fabfb98e4380ddb7facca4bdb6ea1fd356d48c0 SHA-256: bb45f9e940e3b5ab590ce2e37cd801a59a15dfff355fd99afe0a61390f18123f
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent link pointing to 'zajinet.ru', suggesting a phishing or malware distribution attempt. The 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external links, many of which are likely malicious or part of a link farm. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/award?keyword=i+hate+you+i+love+you+piano+pdf
    • https://tosafesixagosug.weebly.com/uploads/1/3/1/3/131383933/sezuvibiwidupawekavi.pdf
    • https://getiwojaxewife.weebly.com/uploads/1/3/4/0/134012456/refexalalab.pdf
    • https://dobojadu.weebly.com/uploads/1/3/2/7/132711966/3953c7b48a.pdf
    • https://narodejezagog.weebly.com/uploads/1/3/3/9/133988416/kiganidisoxo-jepezexej-lujelujuzibavi-ligev.pdf
    • https://didefitelov.weebly.com/uploads/1/3/0/8/130874246/587358.pdf
    • https://bojufare.weebly.com/uploads/1/3/1/0/131070992/05456a.pdf
    • https://moxusovilala.weebly.com/uploads/1/3/0/7/130738705/758990368855f9.pdf
    • https://setibadumizokeg.weebly.com/uploads/1/3/4/8/134880372/0295f.pdf
    • https://dijibelusubif.weebly.com/uploads/1/3/4/8/134871127/pilamixez-serinexal-tozenegatojekos-jebis.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://69b3109a-7cce-4514-9193-d2106d9976ab.filesusr.com/ugd/3c2969_a15bf72bcc7245dc80637bd1925e9878.pdf?index=true
    • https://s3.amazonaws.com/wejuvono/graphing_and_analyzing_scientific_data_enzyme_activity.pdf
    • https://5e9c932d-19a8-4d5a-a970-d4bc0bcb832b.filesusr.com/ugd/bae0a0_0aa16b9d50c54692bcb7a49ad7adac4f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0c484144-1e33-4c68-b67b-4a2f3143a863/western_unimount_snow_plow_parts_diagram.pdf
    • https://uploads.strikinglycdn.com/files/f818607b-b478-44f3-96a3-4dd0725064d7/rimepejovabet.pdf
    • https://1e1f235d-56dd-4976-b20d-d38e3fe7b172.filesusr.com/ugd/210b45_527601088af14a548f02b2b4f2819aac.pdf?index=true
    • https://s3.amazonaws.com/rizezobabub/jugazozasaro.pdf
    • https://uploads.strikinglycdn.com/files/e986786a-a227-4354-8286-6f38c74a18b7/zamuwatoso.pdf
    • https://uploads.strikinglycdn.com/files/de9bd11d-ba56-49ff-89c2-d39a648adde3/sap_hana_tutorial_for_beginners.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_off0000ecc2.bin
604ecc1feb69528e6a2f43c1095603ea537131c740c484bba1572c07bd31384a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECC2 4836 bytes
font_01_sfnt_off0000fd3a.bin
8cd79962dd6c244e69d22bda72b648b8f1638b8d11742ea06459affe49ea6bc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3A 11232 bytes
font_02_sfnt_off00012360.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12360 4324 bytes

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