Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce0d5d6214476c32…

MALICIOUS

PDF

248.9 KB Created: 2020-12-11 03:19:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b0167ed342e6e8bf101a7571d925b2b7 SHA-1: 17df422550065b0570da1e446567d066e2d61b44 SHA-256: ce0d5d6214476c32247ebbf59819e2957659798959460b1d5fc4790165a69197
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or malware distribution. The document body, though heavily obfuscated, appears to reference 'Weight watchers scale manual', suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/strik?utm_term=weight+watchers+scale+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371806/normal_5fbb81be24474.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391605/normal_5f9298894baab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368777/normal_5f879d02d4917.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://static1.squarespace.com/static/5fc10aaaf9866f3fd2d521c0/t/5fcead2ac2632f090ac2020c/1607380267207/wwe_raw_live_updates.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc566ac3dfdd95b60f3409b/t/5fc72f3eb2fa4660c8cf17ea/1606889292350/selecta_ice_cream_flavors_with_brownies.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/caesar_3_softonic.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/traffic_rider_unlimited_money_apk_latest_version.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc36a5ebda9c57a97ce2be0/t/5fc5d2633f75b166439e1b55/1606799974565/examples_of_personal_social_and_cultural_identities.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/sases.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/41779900378.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/copy_and_paste_roman_numeral_2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cc948139af037644bbed/t/5fcfb2f476f3eb1a46efee1c/1607447284291/21402099652.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/14153867422.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2b6dda5bc066edfb157b0/t/5fd18f5e0f163860c7a90777/1607569249427/rimedomoxevimisurevutat.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_off000387d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x387D5 5088 bytes
SHA-256: 23ce5fd75adabb42ee16e36da6c3da4ef926feac488a7e3b2710a402fb8ec765
font_01_sfnt_off00039912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39912 14540 bytes
SHA-256: 22f0e942d1c6e49b6829fd4980375b4ba5a9aa0945c73185f89982607d181580
font_02_sfnt_off0003c78d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C78D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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