Malicious PDF — malware analysis report

Static analysis result for SHA-256 729f237afd5860dc…

MALICIOUS

PDF

81.9 KB Created: 2021-03-15 11:38:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c47652d0817ae562906e5fc7309c3ba8 SHA-1: 9f01e018fec0a3ddf1773228a0cd47624d50c67c SHA-256: 729f237afd5860dc154207665a998497198adfdf96ae7e973e8e2f8d1bd5e123
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded malicious URL suggest it's designed to redirect users to a harmful site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/wix?keyword=age+of+exploration+dbq+answers
    • https://cdn.sqhk.co/bevoroxur/hj1NjeC/ding_tea_athens_athens_ga.pdf
    • http://vzruvayarttraff.xyz/amazing_grace_trumpet_duettddt2.pdf
    • https://cdn.sqhk.co/goxobuve/ijyjaij/miwofimeredukebuv.pdf
    • http://xevojifixifepi.scienceontheweb.net/benim_hocam_tarih_2020.pdf
    • http://sizuxofutitarax.mypressonline.com/chapter_17_section_1_italy_birthplace_of_the_renaissance.pdf
    • http://copyrightsupportforlnstagram.com/heart_cpr_promo_codezwulf.pdf
    • http://ziwixan.iblogger.org/31895247671.pdf
    • http://nikipefemov.iblogger.org/pejinenivoleb.pdf
    • http://fotubobuwenapu.scienceontheweb.net/98106934721.pdf
    • http://natiral.space/personality_psychology_domains_of_knowledge_about_human_nature_randy_larsen_7th_edition_20212mctp.pdf
    • http://lipexifinidoda.scienceontheweb.net/70211104618.pdf
    • https://cdn.sqhk.co/kerutadit/cgdPap9/tetojuvenum.pdf
    • http://bnl-jobs.com/best_all_in_one_washer_and_dryer_combo2xwn4.pdf
    • http://recepty-dd.info/create_auto_reply_template_outlook_2010t31c3.pdf
    • http://airet.space/dilaxubofederipu20.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/435f9a16-f1cb-4c9f-a60d-79da570b68dc/ge_indoor_timers.pdf
    • http://livirava.atwebpages.com/rawuberij.pdf
    • https://uploads.strikinglycdn.com/files/ab9ced97-ae96-440a-871b-f3e033d91dc2/lazexuvawutefav.pdf
    • http://zuvolape.epizy.com/55683708718.pdf
    • https://uploads.strikinglycdn.com/files/2de0a0c4-5d69-4a6e-9b54-17001eb840bc/how_to_scan_a_document_using_canon_mg2120.pdf
    • https://uploads.strikinglycdn.com/files/8f02d633-da2a-483b-98d5-bdc67365030d/kivojekikudutul.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_off0001013a.bin
c8a190a1ddc29d4d24fd504df6e6074ac05e7cc1f3337bffafb00cc44621330a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1013A 5624 bytes
font_01_sfnt_off0001147d.bin
e02a51a291f2b258bfa047d4b2ff35cd940c32951999a69868431904b7ee263a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1147D 11236 bytes

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