Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9412d97ea9b39a4…

MALICIOUS

PDF

78.8 KB Created: 2021-03-18 12:26:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: b8c3e8e1bf2e2ff2905a4bd6382018c6 SHA-1: bac0616c6c302158b7dfddb55aea66d6f1634740 SHA-256: e9412d97ea9b39a4a0c0290347bfd22f2c5f4de56eb4dd63ae91a3fbd895dbcb
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as a phishing trojan. It contains a link farm with numerous external URLs, many hosted on disposable domains, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/award?keyword=python+language+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378153/normal_6044cd4ede9c2.pdfIn PDF document text
    • https://dewuvibemezifo.weebly.com/uploads/1/3/4/7/134763410/7852477.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462986/normal_603b5001a57e4.pdfIn PDF document text
    • https://dananiruw.weebly.com/uploads/1/3/2/7/132741593/bitujedukufol_gisadolugud_gilij_tilanilifu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469617/normal_6006bc707edc9.pdfIn PDF document text
    • http://nelibagaxo.iblogger.org/how_to_get_rid_of_acne_marks_naturally_at_home.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450864/normal_60313e28e2672.pdfIn PDF document text
    • https://vogapixafaroge.weebly.com/uploads/1/3/4/2/134234717/5418777.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xumizimewimapa.epizy.com/miromibomo.pdfIn PDF document text
    • https://9afb1793-bc57-4514-bb46-74e980466609.filesusr.com/ugd/11f207_290fe3a16ba84d4c84be1413c8779e40.pdf?index=trueIn PDF document text
    • http://taxupot.rf.gd/english_meaning_dictionary_app.pdfIn PDF document text
    • https://e2604e0b-f95a-4acb-b53f-a7db3827b2a1.filesusr.com/ugd/225520_3b07a852b22e477f80f0ab33a26ea4e5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mukutud/tatoxavufakudeziwakibaro.pdfIn PDF document text
    • https://31e64076-56b3-4e53-9780-179364fbad2f.filesusr.com/ugd/d8d3cb_e10ac704af9e4712a80e9d90b1f72b18.pdf?index=trueIn PDF document text
    • http://mujusitajal.rf.gd/kindergarten_writing_worksheets_free.pdfIn PDF document text
    • https://63c5840e-267c-49ed-94d3-fc9f9d8b9c0b.filesusr.com/ugd/8c5bc8_b4540ba1a1614d36b211eee7817fbf7d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/average_super_fund_performance_2017.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF584 5132 bytes
SHA-256: 6a9d5d8baac23714576eb91fdf7c7eb97038b2c38f2e93944874869815f2a893
font_01_sfnt_off0001070f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070F 11476 bytes
SHA-256: ca663ccb51c1f4349bd1dc1b0eb89a6fb1def93255539c5614c4204c25368b2c

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