Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e02c6e5fa2e349a…

MALICIOUS

PDF

76.2 KB Created: 2021-04-14 01:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 6ce90070d7996996216d64cb97c91bf9 SHA-1: 1ca932c13953674a5e616eb1f76c615c8b50cbf5 SHA-256: 9e02c6e5fa2e349a2306fed55f7df8162eb8be4037412f995951538322bb7478
184 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains text related to resetting a Maytag appliance, which serves as a lure. The primary IOC is the malicious URL used for redirection, indicating a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dafemum.ru/strik?utm_term=how+to+reset+a+maytag In PDF document text
    • http://wunuxuvi.sportsontheweb.net/promoting_active_learning_strategies_for_the_college_classroom.pdfIn PDF document text
    • https://bixevojug.weebly.com/uploads/1/3/0/7/130739122/60278b2.pdfIn PDF document text
    • https://sotipazokelaxat.weebly.com/uploads/1/3/2/7/132712266/bowivup-godesoza-xidejimulawuji.pdfIn PDF document text
    • https://cdn.sqhk.co/resilano/IiZifcq/cal_fire_evacuation_map_santa_cruz_county.pdfIn PDF document text
    • https://lumamiwaba.weebly.com/uploads/1/3/4/7/134735329/fea9e53612.pdfIn PDF document text
    • https://cdn.sqhk.co/lexelinowe/iiWihid/fake_call_police_prank_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/uqwjiCX/canon_camera_connect_mac_download.pdfIn PDF document text
    • http://pugorot.mygamesonline.org/81581048336.pdfIn PDF document text
    • https://tituwuvosaladu.weebly.com/uploads/1/3/4/8/134849885/8368e0bc.pdfIn PDF document text
    • https://kinifuromokemo.weebly.com/uploads/1/3/5/3/135348191/7052661.pdfIn PDF document text
    • https://bakubirusi.weebly.com/uploads/1/3/4/6/134680497/5bfac40f4b033.pdfIn PDF document text
    • https://gobalubige.weebly.com/uploads/1/3/5/3/135339343/falalepuf.pdfIn PDF document text
    • http://luxasireku.sportsontheweb.net/7_chakras_meditation.pdfIn PDF document text
    • https://lumewogomor.weebly.com/uploads/1/3/4/3/134319436/4872488.pdfIn PDF document text
    • https://dugitesabisaxo.weebly.com/uploads/1/3/4/3/134392589/675e3220cfb89f5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/81506623930.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/antenna_channel_guide_denver.pdfIn PDF document text
    • http://tajiroxajesolut.atwebpages.com/39676221024.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/orange_pear_apple_bear_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c61ca66-4e51-46e5-8246-1bb90156c49d/line_6_pod_2.0_guitar_multi_effects_processor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c56a09ba-c491-4b7e-98bf-07ee540fc63e/do_pawn_shops_give_loans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6356630-ee2b-4ae0-87da-7592ccd0c73b/29334446488.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e192094-f2b3-4711-80d6-2115ee2b3565/53180684393.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b81ae58e-21ef-4b23-8ce8-90b902af9ed8/where_to_buy_furnace_control_board.pdfIn PDF document text
    • http://japamitafixe.myartsonline.com/jukofizizuxow.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_off0000edd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD2 5128 bytes
SHA-256: 5c2dd91d7c10c90d0c2c3cd49bdb3b8d065c4be6850b6d793242afa0443919a2
font_01_sfnt_off0000ff43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF43 10520 bytes
SHA-256: 5847207ec98df92583aa2717aa245f58b20ecdc9017112519372881dcc5e33e2