Malicious PDF — malware analysis report

Static analysis result for SHA-256 685da114710fbfb6…

MALICIOUS

PDF

75.2 KB Created: 2021-01-21 16:52:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: f7441a21abfd374a4e5f0f4cca4dd23a SHA-1: 03ee17090b2861b3d7ad3ad487902b771d337617 SHA-256: 685da114710fbfb651952d7943c8f6b10170c541a2db0df1d809aea250cc5263
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, traffset.ru, which is presented as a search result for a specific product. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it is designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://traffset.ru/aws?utm_term=beckett+oil+burner+ignition+transformer PDF link annotation
    • https://site-1166752.mozfiles.com/files/1166752/xuzijifobevewaxan.pdfIn PDF document text
    • https://site-1185743.mozfiles.com/files/1185743/cute_cartoon_wallpaper_hd_download.pdfIn PDF document text
    • http://lorebip.22web.org/sejoxisozez.pdfIn PDF document text
    • https://cdn.sqhk.co/banifiga/hj2diMz/nuletimizituwinopiwuzise.pdfIn PDF document text
    • https://site-1212713.mozfiles.com/files/1212713/60043786219.pdfIn PDF document text
    • https://site-1175608.mozfiles.com/files/1175608/vusepitow.pdfIn PDF document text
    • https://cdn.sqhk.co/savimatuv/IjiAidk/hunter_assassin_online_crazy_games.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
    • http://fazemiwasagi.epizy.com/paises_formadores_da_america_anglo_saxonica.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/rust_vs_c_performance_benchmark.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/marginal_abatement_cost_curve_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/lufodozivozonipe.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/30280075222.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/sekiro_lapis_lazuli_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/google_sheets_filter_view_range.pdfIn PDF document text
    • http://mizixizomafupez.epizy.com/dabaguvisakilevufu.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/85471738530.pdfIn PDF document text
    • http://datasixiva.epizy.com/assuring_transformation_dataset.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/64970411923.pdfIn PDF document text
    • http://rajokawaxes.rf.gd/vugatimasikis.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_off0000da66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA66 5336 bytes
SHA-256: 5e1d9a9fd5b2c286cdd5597d6b8b5ce3450b703ff3dbc21511971a413b35cfad
font_01_sfnt_off0000ec70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC70 10772 bytes
SHA-256: e488cfc6e3f094ba3a05cd5d0bd31b03ecd4bf4fb47bb7677e3449c54f76ada8
font_02_sfnt_off00011151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11151 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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