Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ca89ac0f277162…

MALICIOUS

PDF

70.1 KB Created: 2021-02-11 08:07:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e33325358a70bea3cfe8cea455b92a7d SHA-1: 3222263bac5eb7a31f5ea4edd908eb5609126814 SHA-256: 01ca89ac0f2771629141c9c8384ff28e356bdfa7b93d1397bdc1bdd56940643b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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.
  • 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://crophysi.ru/aws?utm_term=function+notation+worksheet+answers+pdf In PDF document text
    • https://povefedonigo.weebly.com/uploads/1/3/1/6/131637150/zajasupezole.pdfIn PDF document text
    • https://jadibezunapav.weebly.com/uploads/1/3/4/6/134610372/nudenatexikikaluxul.pdfIn PDF document text
    • http://waxawazurutane.22web.org/design_templates_psd_file.pdfIn PDF document text
    • http://sis-paypal.com/intellij_format_code_all_files7d4lz.pdfIn PDF document text
    • http://ueuniti.xyz/velevuxusebakokelazuwojk1.pdfIn PDF document text
    • http://canlisohbetim.net/inductive_bible_study_guidevectf.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/ijcqieg/77402784155.pdfIn PDF document text
    • https://bukalejobiwasek.weebly.com/uploads/1/3/1/4/131409200/4018538.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/BzDskhb/one_deck_dungeon_dlc_review.pdfIn PDF document text
    • http://copyright-services-us.com/book_and_movie_comparison_worksheetd77wx.pdfIn PDF document text
    • https://lamamamim.weebly.com/uploads/1/3/1/6/131606140/momuviligavipib.pdfIn PDF document text
    • http://tobalalupuvobiv.iblogger.org/remak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fibobaxemod.rf.gd/vilupikufopixugadoreja.pdfIn PDF document text
    • http://kudukel.epizy.com/81169530789.pdfIn PDF document text
    • http://sonazawokog.rf.gd/chucklevision_theme_song.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_off0000d783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD783 5324 bytes
SHA-256: 53131ba4fbafcde574931a7f5e25efa45eba61000b8059b3a2db5f001588dad5
font_01_sfnt_off0000e9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B5 9948 bytes
SHA-256: 5ef1597da2c7320f3647f97b9ffc5d9bcaa157d63b37012da72477bea572bd7a