Malicious PDF — malware analysis report

Static analysis result for SHA-256 a33a6f9a09f68593…

MALICIOUS

PDF

88.4 KB Created: 2021-02-28 07:24:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b8c4bc5cbb6173a1b10de384ad664339 SHA-1: 184fb4cdd2e0b2e3113e2b490219e30deb56f2a6 SHA-256: a33a6f9a09f685939976a1305a4ba16e8b905b3d6f8294bf76c7901f4a429802
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or SEO spam campaign. It contains a large number of external links, many hosted on disposable domains, directing users to various PDF files. The document body, though heavily obfuscated, suggests a lure related to 'domain and range activity answers'. No scripts were extracted, but the presence of numerous external links points to an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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=domain+and+range+activity+answers PDF link annotation
    • http://milanomoda-italy.site/fivisafemanaxinexogumut0dpo3.pdfIn PDF document text
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/nekin_purawesi_tilixasamog.pdfIn PDF document text
    • https://cdn.sqhk.co/fafojipedul/RQlgdjj/kilasunoxid.pdfIn PDF document text
    • http://kismyketio.com/pelicula_mas_alla_de_los_sueC3B1os_completa_en_espaC3B1olgjx3q.pdfIn PDF document text
    • http://comforfemj.fun/nujinowisotivakelgtgnv.pdfIn PDF document text
    • https://digaporabanezaf.weebly.com/uploads/1/3/4/6/134689005/7a12c4d1b166.pdfIn PDF document text
    • https://norenepativen.weebly.com/uploads/1/3/4/3/134315866/lumaronuvaru.pdfIn PDF document text
    • https://cdn.sqhk.co/dodanadofu/iOgiaia/anki_vector_robot_review.pdfIn PDF document text
    • https://kujazekomoduni.weebly.com/uploads/1/3/5/3/135315250/4439d38552.pdfIn PDF document text
    • http://zixudivibudizu.scienceontheweb.net/how_to_identify_my_old_singer_sewing_machine.pdfIn PDF document text
    • http://stakingyfi.com/monster_movie_2014_eng_sub7h33e.pdfIn PDF document text
    • https://cdn.sqhk.co/kotolodegag/fibhZFZ/car_racing_3d_game_apk_mod.pdfIn PDF document text
    • https://xonajababivoxo.weebly.com/uploads/1/3/4/0/134040492/pazaw.pdfIn PDF document text
    • https://cdn.sqhk.co/bifugudawesu/gifyjjK/grand_truck_simulator_2_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.sqhk.co/xegapanasa/gijfAJ1/withings_move_ecg_release_date.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://parezorizujax.rf.gd/86699846430.pdfIn PDF document text
    • http://ranitirunom.myartsonline.com/tecumseh_engines_history.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107BD 5480 bytes
SHA-256: c2bb1032716da5c368b0762fe0dfcaf5ce174736976cdb70e3bd36a7729aad9f
font_01_sfnt_off00011a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A68 10580 bytes
SHA-256: 8e269aea8456eae87f6a03d7fc76fadf2359884c64d8d339369524468afc7332
font_02_sfnt_off00013e9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E9C 16208 bytes
SHA-256: 844fb27054059bbe8e24107f7623dfc8b3714af0429cc888d8296577745ef093