Malicious PDF — malware analysis report

Static analysis result for SHA-256 269a8ab735fe28b1…

MALICIOUS

PDF

78.8 KB Created: 2021-03-21 23:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7b50bc379595e7030991fc909925c0e SHA-1: 9287d3af8b03dfe44f53a3b0fbb26a812deb855d SHA-256: 269a8ab735fe28b13af60935bae88b2c53b1ddd7511448c5ed5843fc40186f0b
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with phishing, and the document body, though heavily obfuscated, contains text related to weather apps, suggesting a social engineering lure. No scripts were extracted, but the presence of an external URI and the overall detection suggest the PDF is designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/123?utm_term=best+weather+alert+app+for+android
    • https://cdn.sqhk.co/faxixuwako/fpmZjek/steppy_pants_mod_apk_2._5._3.pdf
    • https://digojumowixev.weebly.com/uploads/1/3/5/9/135989627/7117069.pdf
    • http://katomowubi.iblogger.org/tijapazaj.pdf
    • https://cdn.sqhk.co/nazixasinuti/jic5ii0/fozepulage.pdf
    • http://wepipedudi.22web.org/zoo_animals_flashcards.pdf
    • https://luwanolukurodo.weebly.com/uploads/1/3/5/3/135397368/e5385b8a6382b0.pdf
    • http://kiritisivasol.mywebcommunity.org/the_best_chick_fil_a_sauce_recipe.pdf
    • http://wepisoja.mypressonline.com/fafigokis.pdf
    • https://cdn.sqhk.co/sumefixes/humVEJr/fokuvuduvunusowabev.pdf
    • https://cdn.sqhk.co/kovezozeseg/chaGvhf/cats_crash_arena_turbo_stars_hack_mod_apk.pdf
    • http://matanusebatug.22web.org/how_to_connect_yamaha_sound_bar_to_vizio_tv.pdf
    • https://cdn.sqhk.co/kekelivig/heQoDFf/cubefield_hacked_arcade_games.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tasagut.rf.gd/divina_comedia_humana_cifra.pdf
    • http://wuxosalilujaza.atwebpages.com/libro_autometrica_2020.pdf
    • https://uploads.strikinglycdn.com/files/7b2847e5-2581-4a56-bc80-1b220fef73dc/fekelonujuzetiwat.pdf
    • https://uploads.strikinglycdn.com/files/ac90fd51-e087-4115-b528-51487965d26f/sonotalo.pdf
    • https://uploads.strikinglycdn.com/files/fd24c216-b04a-4e5d-afab-db03c5e07970/561643661.pdf
    • https://uploads.strikinglycdn.com/files/0248e86b-c12a-412b-9957-516acc3b650b/28972884663.pdf
    • https://uploads.strikinglycdn.com/files/e4aeda47-9d29-40b5-9a5d-5a703310b37a/zezazopozu.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_off0000f6ae.bin
fe15f4d53a8e0516d8e8d7221745311156a53d789d97be84393f1f539dee9eec
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AE 5268 bytes
font_01_sfnt_off000108a9.bin
c76045ab4d254b40465638cbf3d0821c4d59101d00b57b3a87cbba09d7b87f4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x108A9 10812 bytes