Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb09078f671997f5…

MALICIOUS

PDF

76.8 KB Created: 2021-03-27 18:29:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 1d6488b0cc1352ca27554d3606393a70 SHA-1: 694f2623edb09d78c5c4c90c295ece201141d2b7 SHA-256: bb09078f671997f54a278b743b2fec6cda002b7c8d0f89d676b1dfef1e2e23ac
134 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and embedded URLs, suggesting it acts as a lure to download further malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is part of a link farm on disposable hosting, further supporting a phishing or malware distribution scheme.

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/award?keyword=chinese+picture+dictionary+pdf+free+download PDF link annotation
    • http://firstreadersclub.com/vscode_portable_versionk8mwt.pdfIn PDF document text
    • https://cdn.sqhk.co/noloxunipe/fghajdo/goveluj.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvaratuji/sjceEDZ/plague_inc_gameplay_ssundee.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/65786180969.pdfIn PDF document text
    • http://powajaxib.medianewsonline.com/symbolic_ai.pdfIn PDF document text
    • http://robertferrell.net/d_link_dir_615_troubleshootingbzamo.pdfIn PDF document text
    • http://jevutodirawis.iblogger.org/sony_wh_1000xm2_specs.pdfIn PDF document text
    • https://dexazime.weebly.com/uploads/1/3/1/4/131437554/dcaad8c0f2.pdfIn PDF document text
    • https://rakulemiz.weebly.com/uploads/1/3/2/6/132682689/c398920d75fb35.pdfIn PDF document text
    • http://bcipreactivaperu.com/ethical_hacking_classes_in_bangalore4sxz3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pabovabavuwemet.rf.gd/understandable_statistics_12th_edition_brase.pdfIn PDF document text
    • http://zerimokima.rf.gd/hardest_questions_to_answer_would_you_rather.pdfIn PDF document text
    • http://fikikozazilut.rf.gd/xatogureja.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/tisaxiboxununivugubas.pdfIn PDF document text
    • http://tipujujidudig.rf.gd/8301200435.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/87360181755.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/colour_wheel_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/blazerush_playstation_4_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/raw_radish_nutritional_information.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_off0000ee2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2D 5344 bytes
SHA-256: a596500a39db282b4f89f5a44db52f87d5ebfbdbc8352570b1e3c534269d868a
font_01_sfnt_off0001006c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1006C 10952 bytes
SHA-256: dbe67ac5cb1e13a23f6149d67bd6dbc9ec070df06893f7532123c4931d8c7a40

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