Malicious PDF — malware analysis report

Static analysis result for SHA-256 170a9b19705a13a8…

MALICIOUS

PDF

74.4 KB Created: 2021-02-23 14:36:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: bf93cf6b76d28061ce339d1b4679b0d4 SHA-1: d0a2aae63c7f228670b80001f67c89a820b15bdc SHA-256: 170a9b19705a13a82bbbc1b5084f99a1d4339e9c9ba434e9c1b01466d240efb0
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Ar 15 parts out of stock' and embeds a malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of external URIs suggests an attempt to redirect the user to a compromised 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://seumenha.ru/strik?utm_term=ar+15+parts+out+of+stock PDF link annotation
    • http://obschee.xyz/princess_leia_s_theme_piano_sheet_music5wy4a.pdfIn PDF document text
    • https://cdn.sqhk.co/tavedikovo/gfRngfG/netflix_party_chrome_extension_ipad.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/cZ8KIDk/kosenilivor.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/cierij3/play_free_online_bus_driving_simulator_games.pdfIn PDF document text
    • http://riwetisanuda.iblogger.org/69947127293.pdfIn PDF document text
    • https://cdn.sqhk.co/zerumowo/jijT6gf/space_invaders_deluxe_mame_rom.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/ciaC5hn/drop_it_modern_photography_backdrops.pdfIn PDF document text
    • https://cdn.sqhk.co/linewebozid/enEFDkm/jekido.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/64809751489.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/ecg_rhythm_test_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/rexevulazapawu.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/after_we_collided_review_common_sense_media.pdfIn PDF document text
    • http://kosirokuki.epizy.com/finding_the_perimeter_of_a_semicircle_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/89362036569.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE469 5204 bytes
SHA-256: ff421bb5322ee6e85311b14821dab5f7756e0bb2eca349378676beac33c85130
font_01_sfnt_off0000f63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63D 11644 bytes
SHA-256: 5d0b50d409259e4881268e0d51c1fb78cb61e1ea7dd3bd530927a6c2556178c4