Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f59001138913b3f…

MALICIOUS

PDF

76.8 KB Created: 2021-03-22 06:27:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8bce67e291c0f01a77542d2b4eb282d SHA-1: c20c750b5fdb497d0cfdf1daa38b41643c4fc340 SHA-256: 2f59001138913b3fcb823901d76a0d9a44351beb1155ce0ff67c8302ba4dd743
104 Risk Score

Malware Insights

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

The file is identified as malicious by a ML classifier and ClamAV, with heuristics indicating it's a phishing lure disguised as an invoice or audit report. The embedded URL, https://jottigo.ru/123?utm_term=audit+report+as+per+caro+2016, is the primary indicator of a potential download or redirection to a malicious site. No scripts were extracted, but the PDF structure and phishing lure suggest an attempt to trick the user into executing a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jottigo.ru/123?utm_term=audit+report+as+per+caro+2016
    • https://cdn.sqhk.co/gonolesuzam/jtYoii6/losubalafugemujejoserit.pdf
    • https://cdn.sqhk.co/zitajazasu/ZzHajeo/grammarway_2_answer_key_online.pdf
    • http://uscovidcharts.com/18823735681llp65.pdf
    • https://cdn.sqhk.co/wanowofimaz/M2hg5ha/lock_screen_live_video_wallpaper_apk.pdf
    • http://fenellalucynelle.info/swiffer_wet_jet_pads_how_to_usehygfd.pdf
    • https://cdn.sqhk.co/mugolino/jiehan8/wugoweno.pdf
    • https://cdn.sqhk.co/letarezetap/jjgcjiX/bluestacks_hd_app_player.pdf
    • http://umdtheatre.ru/letter_from_a_birmingham_jail_audioxdwhc.pdf
    • https://cdn.sqhk.co/vefapatape/F9ILhhL/92072427536.pdf
    • https://cdn.sqhk.co/jivazufevi/hdNqifk/fozolosujunit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kukupunopedon/12th_biogas_project_in_marathi.pdf
    • https://uploads.strikinglycdn.com/files/ec431758-b2ac-48c9-8350-3e368fe4393d/xenaxobesej.pdf
    • https://s3.amazonaws.com/jamuluvuvava/32602529986.pdf
    • https://uploads.strikinglycdn.com/files/ce12d80e-bb0a-45da-bca8-4c1ca5d9be2a/how_to_charge_my_mophie_powerstation_xl.pdf
    • https://s3.amazonaws.com/sugosubexez/addition_and_subtraction_worksheets_for_1st_graders.pdf
    • https://uploads.strikinglycdn.com/files/ccad8624-e7c0-48c1-975e-ce2cd6e2766f/laxelus.pdf
    • https://uploads.strikinglycdn.com/files/154e32c0-4d84-427a-ad4d-94da6999a06b/11259779299.pdf
    • https://s3.amazonaws.com/polexebuj/t_shirt_template_actual_size.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed28.bin
f52f1f25d2be741332eed8971f710197c78a146f6d3a75f4caeeb3566af42d3a
pdf-font-stream PDF embedded font (sfnt) at offset 0xED28 5504 bytes
font_01_sfnt_off0000fff0.bin
8e2433dc64a248c65b64a97b70dda7c5fe2928894a7addc6f0b9656715447fb0
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF0 10776 bytes