Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f396d4df9cebc1…

MALICIOUS

PDF

79.8 KB Created: 2021-01-12 00:28:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0127d810a4d3e3e5fb7453235f2ee424 SHA-1: ce800839fbb1dcbf9e2a4b20b2adb24df651aee7 SHA-256: f7f396d4df9cebc13956f7b9e958f950418b25c07d0f8479b05fdda07d3e621f
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to exploit vulnerabilities or trick users into visiting malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafftec.ru/123?utm_term=relaciones+interpersonales+e+intrapersonales PDF link annotation
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/wufafuw_bojopanisod_rofawikalujuge.pdfIn PDF document text
    • https://site-1174531.mozfiles.com/files/1174531/kitebewetup.pdfIn PDF document text
    • https://pelabinal.weebly.com/uploads/1/3/1/3/131379552/9890777.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452374/normal_5fabefe0809a4.pdfIn PDF document text
    • https://site-1177725.mozfiles.com/files/1177725/cooking_town_kitchen_chef_game_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/hef5jiQ/34251495558.pdfIn PDF document text
    • https://ketovezuv.weebly.com/uploads/1/3/4/4/134454878/pixanapujawar-jijev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382190/normal_5ff9b040c1c94.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/3024713.pdfIn PDF document text
    • https://site-1166675.mozfiles.com/files/1166675/lomojavoxojudaxof.pdfIn PDF document text
    • https://site-1237828.mozfiles.com/files/1237828/birawusajujinakogake.pdfIn PDF document text
    • https://site-1171969.mozfiles.com/files/1171969/43646158309.pdfIn PDF document text
    • https://pavenepono.weebly.com/uploads/1/3/1/3/131383439/jukokuxos.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/kovilowab/popojubesalutezikuxalafas.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/retailing_for_dummies.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/64530547111.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/68960246136.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8F 6744 bytes
SHA-256: 0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63
font_01_sfnt_off0000ee76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE76 4724 bytes
SHA-256: b6d1082c8b16fb149119bb6677a9e5a1f169f2532f188ddf76e6780729399b43
font_02_sfnt_off0000fe84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE84 11216 bytes
SHA-256: bc573844d4879d053b32aaf25d5795f82a5964549b85682a3c5b768a70b641d5
font_03_sfnt_off00012339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12339 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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