Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fe3591597c8ed03…

MALICIOUS

PDF

274.4 KB Created: 2021-01-08 15:39:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9073b06f157ced9c5fc151e91d06b8a2 SHA-1: bd2c5799144242989cffdc62931dfce36d972227 SHA-256: 5fe3591597c8ed0377564ff0a5c0699a7bc9b7791f5e68ca3bae1114ffa10de3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9792

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://traffine.ru/aws?utm_term=guidelines+pulmonary+hypertension+2017 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379984/normal_5f905c794cd71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421969/normal_5f9f0d15bcbfe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499351/normal_5ff67007b53b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486563/normal_5fdf958cbf701.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366646/normal_5fdfa90450ab1.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/jgdXjjZ/teach_english_online_jobs_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/zejegure/HjEdjfg/4_pic_1_word_game_over.pdfIn PDF document text
    • https://cdn.sqhk.co/tinipuded/ghRjgjc/74490848835.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/hjjbZih/plane_crash_2020_video.pdfIn PDF document text
    • https://cdn.sqhk.co/mejofiwog/cgggewl/mermaids_cher_trailer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477649/normal_5fe12cd674575.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426267/normal_5fbcb1c7caddd.pdfIn PDF document text
    • https://cdn.sqhk.co/ratugetaj/jegcidl/age_of_ottoman_walkthrough.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/vatakefojunib/comptia_career_path.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/jetuluzikudanigelaxolusa.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/dasasolaririmuwep.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/estrategias_de_afrontamiento_emocional.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_off0003ec61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3EC61 5620 bytes
SHA-256: 7d5f605abfe10596e62a7309f75b81f5a727f5c6e9b65f84b7aa895e4b10f26d
font_01_sfnt_off0003ff54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FF54 15012 bytes
SHA-256: c12d7b28c93381ac58fd75a92fe04ce59bec219588a1d5e5f8411c7482c1bb69
font_02_sfnt_off00042c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42C60 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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