Malicious PDF — malware analysis report

Static analysis result for SHA-256 13df360571593cc8…

MALICIOUS

PDF

81.6 KB Created: 2021-04-05 20:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 783c0227e4e353e00ef35637ae15ea93 SHA-1: d124d9f12c3e7917d9f30684deea4c311ae189db SHA-256: 13df360571593cc8a8b8fbf4fd147107ada04c3340140bc0b62946db27dd10ac
104 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'ponafet.ru' suggests a phishing or malware distribution attempt. The heuristic 'SE_URGENCY_LURE' further supports the phishing pretext, indicating the document likely contains deceptive language to prompt user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ponafet.ru/strik?utm_term=tesla+model+3+price+drop+uk+2020
    • http://leadtop.co/40283938706fm5y0.pdf
    • https://cdn.sqhk.co/xolofiwano/ifQSGgv/red_alert_2_wifi4games.pdf
    • https://cdn.sqhk.co/lizupasepafu/icRjh8u/manaxobotokizanomakimu.pdf
    • http://govnosiakxws.online/bengali_new_film_sultan_song4br7n.pdf
    • http://piredvizhnik.com/17003403783xytj3.pdf
    • https://cdn.sqhk.co/jolodovi/hfjaghg/62744846470.pdf
    • http://about-central.com/75313527200lulb7.pdf
    • https://pisusexozidi.weebly.com/uploads/1/3/4/7/134740488/pudaxo.pdf
    • http://straponartist.com/catalogo_hinode_colombia_2019584nf.pdf
    • https://kadamoxezegawuf.weebly.com/uploads/1/3/4/3/134347408/c36586effc4c4a.pdf
    • https://zusonuxegaza.weebly.com/uploads/1/3/1/4/131437774/ladibevepog.pdf
    • https://memarexegota.weebly.com/uploads/1/3/4/3/134366516/soteje-tofaxuzarukof.pdf
    • https://cdn.sqhk.co/giwumazusew/cjcifii/emoji_glitter_live_wallpapers.pdf
    • http://artrosil.xyz/happy_new_year_abba_video_freem938h.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dabatisew/grade_1_math_addition_word_problems.pdf
    • https://s3.amazonaws.com/tamobalasu/39353082111.pdf
    • https://s3.amazonaws.com/tutasujal/vekesodefoxegekupegope.pdf
    • https://s3.amazonaws.com/tobojelusiwi/feludetomefixop.pdf
    • https://s3.amazonaws.com/bidurudilidujug/10095404394.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_off0000ffd8.bin
4705f770568694cc2993bac38db75533ac922e5be7340e66bf879e0fd594ccd2
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD8 5672 bytes
font_01_sfnt_off0001130b.bin
a4cd44d9bdce151633c0ff31148a9ab21840765f64b08f9acea5679150ed0321
pdf-font-stream PDF embedded font (sfnt) at offset 0x1130B 11220 bytes