Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe839f5dcd466ff3…

MALICIOUS

PDF

76.2 KB Created: 2021-03-24 07:19:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 05be994338d47c0081f823398a860aac SHA-1: 2d149869b764b18d580d1fe76e86864edc1b421c SHA-256: fe839f5dcd466ff3406ff4bdce0b3d3e5a8bfb509c8083b7a59b70284b1bbff6
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a primary suspicious URL being https://lozipotod.ru/strik?utm_term=tim+ferriss+net+worth+2020, which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to 'Tim ferriss net worth 2020'. No scripts were extracted, but the PDF structure and URL patterns are consistent with phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://lozipotod.ru/strik?utm_term=tim+ferriss+net+worth+2020 PDF link annotation
    • http://lokubakodo.getenjoyment.net/jesobipiwedevugojiku.pdfIn PDF document text
    • https://cdn.sqhk.co/dosovejozeb/W7iejhk/biwuxifepi.pdfIn PDF document text
    • http://mitsumoro.ru/982042887583emih.pdfIn PDF document text
    • http://dalidokumum.22web.org/jeep_grand_cherokee_owners_manual_2016.pdfIn PDF document text
    • http://creamwalls.online/how_to_know_if_baby_cries_too_much56vy6.pdfIn PDF document text
    • http://douchelabs.xyz/binaliwala_song_freep2jpd.pdfIn PDF document text
    • http://lewuvumo.sportsontheweb.net/56066258506.pdfIn PDF document text
    • http://okrasote.info/346361732162581p.pdfIn PDF document text
    • http://lordtrans.ru/what_is_the_difference_between_dewalt_20v_max_and_20v_xr1f9hk.pdfIn PDF document text
    • http://eroganoficial.site/813777831712ca6s.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/WNxgidZ/color_switch_baller_map_code.pdfIn PDF document text
    • http://nesobaka7.xyz/76247146631osyl4.pdfIn PDF document text
    • http://reawolt.online/rinnai_e110cn_parts_listw0z55.pdfIn PDF document text
    • http://sutixekume.22web.org/rigabenoluwipitig.pdfIn PDF document text
    • http://muldwych.com/how_to_program_the_honeywell_light_switch9vv6l.pdfIn PDF document text
    • http://getcreditcheck.info/pezuferivaba4rng.pdfIn PDF document text
    • https://cdn.sqhk.co/zejegure/giqR1ZK/twisters_menu_albuquerque.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://labujuf.epizy.com/amino_acids_structure_and_properties.pdfIn PDF document text
    • http://xemokajufowun.rf.gd/96694876233.pdfIn PDF document text
    • http://jemejuzot.epizy.com/math_worksheets_for_5th_grade_word_problems.pdfIn PDF document text
    • http://getidevip.epizy.com/texoz.pdfIn PDF document text
    • http://wuvoxebegef.rf.gd/reading_and_writing_curriculum_guide.pdfIn PDF document text
    • http://minivenema.atwebpages.com/10630222304.pdfIn PDF document text
    • http://jegepifewomu.epizy.com/what_is_the_history_of_life_insurance_uk.pdfIn PDF document text
    • http://zagupijalixi.myartsonline.com/how_to_draw_human_cartoon_characters.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_off0000ebd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD4 5080 bytes
SHA-256: e397d3f0980c726cc854a70bf7730827396a58b62d430cec23b2062ad5ea25b3
font_01_sfnt_off0000fd07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD07 11240 bytes
SHA-256: 32acf92aac7dfdb744b8285e982fa89d0bdd30e31cd0e139d9b0327f8c262bf9

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