Malicious PDF — malware analysis report

Static analysis result for SHA-256 acd319daf84729fa…

MALICIOUS

PDF

75.1 KB Created: 2021-03-29 05:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52ae6527f522739502c1a94a7c4d020c SHA-1: a79ceaf1bedcc359d5bb64b56489f5d3ed65856b SHA-256: acd319daf84729fae30d1f1d038b55892a1d8cc677a442f80214d556b7b323dc
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that mimic search results, likely to trick users into downloading further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jottigo.ru/award?keyword=google+cloud+developer+cheat+sheet+pdf
    • http://xelibirujegid.mywebcommunity.org/adobe_acrobat_word_count.pdf
    • https://devonejejarib.weebly.com/uploads/1/3/4/6/134608322/8164544.pdf
    • https://lajutiruwogow.weebly.com/uploads/1/3/4/5/134585316/3189473.pdf
    • https://cdn.sqhk.co/kekotenonaxu/chbiawA/3114872638.pdf
    • https://cdn.sqhk.co/wanadujogo/jb3gilb/among_us_colouring_book.pdf
    • https://vidamizumowi.weebly.com/uploads/1/3/4/5/134598026/nowuleje.pdf
    • http://raxuzogigegekaj.66ghz.com/oxford_university_press_catalogue_2017.pdf
    • http://xajavawinereko.mywebcommunity.org/march_2020_calendar_telugu.pdf
    • https://cdn.sqhk.co/fubafonu/jajd3ja/hockey_games_pc.pdf
    • http://dekupedatibidal.iblogger.org/6341011642.pdf
    • https://siragakepog.weebly.com/uploads/1/3/4/8/134890789/c28a7.pdf
    • https://nojabepeteguki.weebly.com/uploads/1/3/4/6/134669956/mededas.pdf
    • https://cdn.sqhk.co/dupetodim/m8Hicif/amazon_go_store_los_angeles.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kopivenegi.epizy.com/ninem.pdf
    • https://s3.amazonaws.com/pibabopuduj/powalefifononeduwokegabo.pdf
    • https://s3.amazonaws.com/kizugokofo/bhangra_pa_song_mr_jatt.pdf
    • http://modedavap.epizy.com/1197230274.pdf
    • https://s3.amazonaws.com/perurulexi/zufilorapit.pdf
    • http://femavumifixomud.rf.gd/79906994942.pdf
    • http://gafevudivexer.rf.gd/michel_foucault_books_in_french.pdf
    • http://liduvitulugug.onlinewebshop.net/67764213218.pdf
    • http://zegegapo.rf.gd/42529065200.pdf
    • https://s3.amazonaws.com/wunupalezozerud/75293571044.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_off0000e89d.bin
719b5a9b48aab6970fd2c6de71872ac33991a951c83ce9f114d3ee4feff28eaa
pdf-font-stream PDF embedded font (sfnt) at offset 0xE89D 5508 bytes
font_01_sfnt_off0000fb63.bin
6f6e2fb26eeab0c3e9afbc460aa8aa762fe149df3da504a9111583290836b038
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB63 10700 bytes