Malicious PDF — malware analysis report

Static analysis result for SHA-256 67282180da816796…

MALICIOUS

PDF

172.9 KB Created: 2021-03-18 19:13:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 86fcfa3a3ae7709b5c83cd695a3f16bf SHA-1: 28408620f646a100a6c2866400d867baa2c1e116 SHA-256: 67282180da816796b3f9fe14edb930a2cc1c6397767d315bcd0ab349cd2c9e6a
134 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily obfuscated, suggests a lure related to 'hybrid and alternative fuel vehicles', likely to trick users into clicking malicious links. The presence of external URIs and the link farm heuristic strongly indicate a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://golowaki.ru/award?keyword=hybrid+and+alternative+fuel+vehicles+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4423171/normal_60384e6077fee.pdfIn PDF document text
    • https://cdn.sqhk.co/neviragar/hXGrzwU/funny_gifts_for_friends_wedding.pdfIn PDF document text
    • http://twobigs.space/chihuahua_breed_informationocgbm.pdfIn PDF document text
    • https://cdn.sqhk.co/jakufomego/Us5fghq/never_gone_mod_apk_obb.pdfIn PDF document text
    • http://yourcy.com/4561328181002n43.pdfIn PDF document text
    • https://cdn.sqhk.co/fuxiwimemo/cjjii3G/small_black_ants_with_wings_in_florida.pdfIn PDF document text
    • http://pokypka.xyz/cosecant_secant_cotangent_worksheetypsd7.pdfIn PDF document text
    • https://cdn.sqhk.co/detokelixipi/ujbicyi/car_part_auctions.pdfIn PDF document text
    • http://alexandreablog.com/dusudonibupex1cl.pdfIn PDF document text
    • https://cdn.sqhk.co/pofaxiniraz/geUjjq3/griselda_blanco_netflix_movie.pdfIn PDF document text
    • http://moresukko.ru/power_wheels_dune_racer_vs_extremeofv3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484632/normal_5fdc9a6808b70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370063/normal_5fd37b2b82153.pdfIn PDF document text
    • https://cdn.sqhk.co/tirewaku/jhPRgcD/likes_followers_on_instagram_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426059/normal_5ffbbb7a372e1.pdfIn PDF document text
    • http://neojust.ru/how_to_unlock_safari_lock4k796.pdfIn PDF document text
    • http://powerhdniy.space/rutegejozivsafpg.pdfIn PDF document text
    • https://cdn.sqhk.co/xudevekelefe/hrgjfIA/squadra_fast_and_furious.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gipanigiwulaj.epizy.com/half-_inch_drywall_4_by_8_sheets.pdfIn PDF document text
    • http://zikefibuji.rf.gd/lizujupowanavuruxe.pdfIn PDF document text
    • http://gujugune.rf.gd/aurangzeb_movie_coolmoviez.pdfIn PDF document text
    • http://fabodatutowew.epizy.com/98962117442.pdfIn PDF document text
    • http://jumabesaguvun.epizy.com/tenejirojowipemigukubo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24A51 7940 bytes
SHA-256: 7f14a114d0e897624f9de47100455a2f8c7aecfbb1d70d185bdd16918f3975ca
font_01_sfnt_off00026510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26510 5508 bytes
SHA-256: 8af5f5f210fc9d263a1fdae487fef42935f73871a09d85d6e48e82f8ea749117
font_02_sfnt_off000277cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x277CB 14784 bytes
SHA-256: e040cc506015199d1e4cfc3d7f7218aeac6b2eceaf001e1734a2ebb7c5295517