Malicious PDF — malware analysis report

Static analysis result for SHA-256 a26818828ee2163c…

MALICIOUS

PDF

68.9 KB Created: 2021-03-18 06:52:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f36e9dabdc1a15a27e994d4baaba96cb SHA-1: 6a4c7a0145db75521fcf1f528372a71a4c281d49 SHA-256: a26818828ee2163c00b14921567c5a9b5c0a4e6c73ec713c124c739caad615fa
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing campaign. The document body, though heavily obfuscated, suggests a lure related to 'living without money uk', further supporting the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/wix?keyword=living+without+money+uk
    • https://cdn.sqhk.co/jiluputumusi/ifrsygh/86623720306.pdf
    • https://static.s123-cdn-static.com/uploads/4375700/normal_600562e58c288.pdf
    • https://kizevopizimi.weebly.com/uploads/1/3/5/3/135351298/luvet.pdf
    • http://helpcopyright-service.com/extreme_jet_skisccijc.pdf
    • https://static.s123-cdn-static.com/uploads/4453560/normal_5ff6bda30acee.pdf
    • http://organize.shop/kgb_archiver_softonic5if8x.pdf
    • https://cdn.sqhk.co/bawevabob/DYpgegg/12716670646.pdf
    • https://depopuxa.weebly.com/uploads/1/3/4/8/134893869/addc742.pdf
    • https://cdn-cms.f-static.net/uploads/4466408/normal_60199e6e8a3f6.pdf
    • https://sozawozoxo.weebly.com/uploads/1/3/4/5/134509422/b1753d1dcf30347.pdf
    • https://fanizoliboligom.weebly.com/uploads/1/3/1/0/131070566/porozuwukujaxot_fazowi.pdf
    • https://static.s123-cdn-static.com/uploads/4448556/normal_5fdfa3fb052cf.pdf
    • https://cdn.sqhk.co/gijosevozu/fhcgjhc/ruzorulifezokenujogob.pdf
    • http://se-mrush.com/color_sequence_of_straight_through_cablexrf7a.pdf
    • https://cdn.sqhk.co/fematixub/hfrTRvL/64727120803.pdf
    • https://cdn-cms.f-static.net/uploads/4488103/normal_601d4c8fbf1a8.pdf
    • http://iclod.tech/moxalefaponevoku559oq.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tuwofexuguxu.epizy.com/72733022432.pdf
    • https://s3.amazonaws.com/rujabepifar/80647679875.pdf
    • https://s3.amazonaws.com/xamibebulosaxug/xivoperupekafiwaxugose.pdf
    • http://zodadep.epizy.com/coaching_ontologico_rafael_echeverria.pdf
    • http://lewuxiboru.epizy.com/coffee_with_friends_quotes.pdf
    • https://s3.amazonaws.com/sabobenuwe/pigugeteraxaxu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4a3.bin
36edb2e9651b273d282ff2a80c4f61f283ceda89b908b08398c53b9cb116405a
pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A3 4840 bytes
font_01_sfnt_off0000e519.bin
65d446027deba9e8ce6fead0f16ef57f9e279a683399ea1dbffddbd112b78c97
pdf-font-stream PDF embedded font (sfnt) at offset 0xE519 9792 bytes