Malicious PDF — malware analysis report

Static analysis result for SHA-256 038f162c4723935a…

MALICIOUS

PDF

77.1 KB Created: 2021-03-17 04:28:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e203983969d1a313a17195b7ed312310 SHA-1: 07a548b7567ab238490cd0de8d90f5f4a93a0575 SHA-256: 038f162c4723935a13bb7b06fa6c3392e05c9de7c9da687f14a1e0363e5404a1
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, xezojetit.ru, which is likely part of a phishing lure. The document body, though heavily obfuscated, suggests a theme of complaints or awards, further supporting the phishing pretext. No scripts were extracted, but the presence of external URIs and the overall detection profile indicate a phishing attempt designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/award?keyword=fresh+complaint+jeffrey+eugenides+pdf PDF link annotation
    • http://natfreshik.fun/308580581984zr7m.pdfIn PDF document text
    • http://albatros-trans.ru/american_eagle_online_order_history93zoy.pdfIn PDF document text
    • https://ferofetilusef.weebly.com/uploads/1/3/5/3/135346026/gipibir_bamupizarenugi.pdfIn PDF document text
    • http://xejopegig.mypressonline.com/la_trampa_de_satanas_audio.pdfIn PDF document text
    • http://kakaxazirobolob.iblogger.org/tifujapupadalin.pdfIn PDF document text
    • http://ita-bio.space/vexawuqhegq.pdfIn PDF document text
    • http://maxobujixeweden.sportsontheweb.net/fossil_q_explorist_gen_4_review_youtube.pdfIn PDF document text
    • https://mamafaxugelat.weebly.com/uploads/1/3/0/8/130813750/6dd5fd.pdfIn PDF document text
    • http://youtube-subscribes.com/11652129148ouuxk.pdfIn PDF document text
    • http://duwudivusupo.mygamesonline.org/do_diamonds_increase_in_value.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/25861758-3c22-40a9-9b6a-d9def19fba10/jalirinimamuwabok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cafafbbd-30d4-472b-803c-e46435712413/how_to_factory_reset_iphone_5c_without_passcode_and_computer.pdfIn PDF document text
    • http://fejukuvazov.rf.gd/bolero_music_sheet.pdfIn PDF document text
    • http://wozojatoxako.epizy.com/vogagerosube.pdfIn PDF document text
    • http://sowawobajomo.rf.gd/how_do_i_fix_my_tv_remote_sensor_not_working.pdfIn PDF document text
    • https://147762ec-90f0-4523-8579-43cb3cd17c82.filesusr.com/ugd/6c48b9_50a845e0936d48d78919e7718e11c393.pdf?index=trueIn PDF document text
    • http://vorisenunajix.myartsonline.com/lurakakafosav.pdfIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_b797bb4ea42a42609f4e195066501074.pdf?index=trueIn PDF document text
    • http://zonurupadul.atwebpages.com/upkar_ctet_book_download.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_off0000edfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFB 5700 bytes
SHA-256: d67118be255586acd93234446ddc3cbe11bcb226c3d20e6deabe30224d663a07
font_01_sfnt_off0001014d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1014D 11168 bytes
SHA-256: 3e7c930b8d84f9cb22196bfe03b3c5f98180e52d61f1d787b2ed769f9409bf3c

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