Malicious PDF — malware analysis report

Static analysis result for SHA-256 122b9b1a5d494b89…

MALICIOUS

PDF

71.2 KB Created: 2021-01-23 14:51:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f074e9e0b0eb8b7421693a35f1127e96 SHA-1: e619eed394b5e79108c328a47b67cf171b974e1e SHA-256: 122b9b1a5d494b8937403ad8fce3d1e98c562f83f15df4f0fd55857159f00ab5
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://traffmen.ru/123?utm_term=go+make+a+difference+piano'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score suggest a malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=go+make+a+difference+piano In PDF document text
    • https://dezirivudamowi.weebly.com/uploads/1/3/1/8/131856369/tudenabiretegi_jijexipam_kaxojoza_soxaxirugivan.pdfIn PDF document text
    • https://geguwuwivoloko.weebly.com/uploads/1/3/1/6/131636947/ff6397b4.pdfIn PDF document text
    • https://titumakusijuvap.weebly.com/uploads/1/3/4/3/134353199/7946288.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457305/normal_5ff1f798e9192.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384650/normal_5fe78dbe14830.pdfIn PDF document text
    • http://guwodela.iblogger.org/demand_and_supply_practice_cereal_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446930/normal_5fe85971b9de8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/bulbul_kannada_film_video_song.pdfIn PDF document text
    • http://tofaveme.epizy.com/calendar_2019_marathi.pdfIn PDF document text
    • http://jiboleramar.epizy.com/platformer_mixtape_level_11.pdfIn PDF document text
    • http://tubupokus.rf.gd/bookworm_classic_game_free.pdfIn PDF document text
    • http://fujesotes.epizy.com/debop.pdfIn PDF document text
    • http://batitesejikak.epizy.com/pharmacotherapy_of_congestive_heart_failure.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/divaduragedopazage.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/tajet.pdfIn PDF document text
    • http://nabikelotedabe.epizy.com/piano_music_sheets_with_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/19872221607.pdfIn PDF document text
    • http://xifedesekelogu.epizy.com/zubawavo.pdfIn PDF document text
    • http://pejabefi.rf.gd/tagefe.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/kijobobezaxokofiri.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_off0000d95f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95F 5188 bytes
SHA-256: 077567de54ec02c804d9e7c4eb50ebe3f18ae591b385257bfea57e93a272a056
font_01_sfnt_off0000eaf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF7 10824 bytes
SHA-256: 8c068192b848a9477dbe23f61cbf28611e388687299fd3c5af533776a1fccca6

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