Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e2e9956c646cb43…

MALICIOUS

PDF

92.4 KB Created: 2020-12-20 19:25:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdd747d76f486cd788db2c4e2727b1a9 SHA-1: 1e1f70b54912a867a9ebf7a96a9a4fcbed983d0e SHA-256: 5e2e9956c646cb436eaa96a14ef83809c251c1cd2350b945f6e44a6cb0929435
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a large number of external links, including a link farm, and the embedded content suggests a lure related to 'Runescape ranging guide'. The presence of external URIs and a link farm indicates an attempt to redirect users to potentially malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=runescape+ranging+guide
    • https://togurekeve.weebly.com/uploads/1/3/4/0/134040335/figob.pdf
    • https://widowajezow.weebly.com/uploads/1/3/4/5/134584852/verizokinotoziti.pdf
    • https://xutewosabog.weebly.com/uploads/1/3/2/3/132303209/2228221.pdf
    • https://cdn-cms.f-static.net/uploads/4371809/normal_5fd8e87e6dedc.pdf
    • https://cdn-cms.f-static.net/uploads/4392452/normal_5f946f122ff98.pdf
    • https://cdn-cms.f-static.net/uploads/4369516/normal_5f8bed5798c76.pdf
    • https://cdn-cms.f-static.net/uploads/4496014/normal_5fd67c80663ba.pdf
    • https://static.s123-cdn-static.com/uploads/4393041/normal_5fcd5a86b508e.pdf
    • https://fiwerabonu.weebly.com/uploads/1/3/4/3/134347662/62082d.pdf
    • https://biwizodem.weebly.com/uploads/1/3/4/6/134650183/a5dd97.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/vobuturinivi/xefutolisizuxa.pdf
    • https://s3.amazonaws.com/fodose/guess_game_answers_level_9.pdf
    • https://s3.amazonaws.com/bofake/standoff_2_mod_apk_aimbot.pdf
    • https://s3.amazonaws.com/jizubisetebof/hack_wifi_wpa2_dengan_android_tanpa_root.pdf
    • https://s3.amazonaws.com/kakekojezutok/bseb_12th_dummy_admit_card_2019.pdf
    • https://s3.amazonaws.com/wulagisi/zigirivaditelareno.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f08.bin
e35e133ace10ca017d79b6176ba55c646b9559650d9b4e3d0523091878cc3413		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F08 4908 bytes
font_01_sfnt_off00012fb7.bin
f2e36c78260aa3ad8f2518f3d7b29d861e29655ad588c87cad96e71c011c3789		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FB7 10928 bytes
font_02_sfnt_off000154b5.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x154B5 4324 bytes

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