Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa27c264e69db74d…

MALICIOUS

PDF

76.9 KB Created: 2021-03-08 11:34:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9d2a87c0e3bfbb83ce175e98c9a2ade5 SHA-1: 6488a162acd27afd1d4d823a1fdb1da821d638aa SHA-256: fa27c264e69db74d397724e446e62f8c6066ad9456bfc9ad3036180f2e704a31
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection as a phishing trojan. It contains numerous embedded URLs pointing to disposable hosting and link farms, suggesting a phishing or malware distribution scheme. The document body, though partially corrupted, contains keywords like 'Catalogo' and 'campaña', indicating a lure to disguise malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://botokaw.ru/award?keyword=catalogo+carmel+campa%25C3%25B1a+12+2020+pdf PDF link annotation
    • https://cdn.sqhk.co/giwibilawa/dpxjgT9/dalokuvavubafudup.pdfIn PDF document text
    • http://bopolubolef.mywebcommunity.org/lifamivatepozezupix.pdfIn PDF document text
    • https://cdn.sqhk.co/xixewebirike/heigibn/50392523779.pdfIn PDF document text
    • https://cdn.sqhk.co/bimeniwog/gdnAA2Z/51581287902.pdfIn PDF document text
    • http://fiwisud.getenjoyment.net/bissell_powerforce_compact_turbo_bagless_vacuum_2690_details.pdfIn PDF document text
    • https://niwurepezexeted.weebly.com/uploads/1/3/5/3/135312419/gipowor_pamepixogel_lepakigok_dupeboj.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/honeywell_programmable_light_switch_manual.pdfIn PDF document text
    • https://risonozolediwar.weebly.com/uploads/1/3/1/3/131398017/55549fa7f9ff77.pdfIn PDF document text
    • http://zakosemej.mypressonline.com/who_manufactures_sears_snow_blowers.pdfIn PDF document text
    • http://rosativiwam.mypressonline.com/dovifitekojetugafudib.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/3ULFUhe/casino_card_game_app.pdfIn PDF document text
    • http://bivaxosufuxibo.mygamesonline.org/ps3_ejecting_disc_itself.pdfIn PDF document text
    • https://newogevalofa.weebly.com/uploads/1/3/4/8/134898908/bc97e053450e30.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/57b65aa2-a1d3-4814-8fb3-fb5a02b6d978/death_note_2_netflix_release_date.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/57859634121.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/samsung_android_phone_4000.pdfIn PDF document text
    • http://juwukopegonamu.onlinewebshop.net/visualizing_nutrition_everyday_choices_3rd_edition_ebook.pdfIn PDF document text
    • http://vesedakowata.onlinewebshop.net/lewugiwisilonuniforof.pdfIn PDF document text
    • http://wejajesenopezoj.onlinewebshop.net/duwoviwulekivisori.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/how_to_put_ac_on_heat_mode_daikin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b0e068-9a5c-49fd-9e22-cb1d9829d280/why_is_my_ge_refrigerator_freezer_not_freezing.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD405 5740 bytes
SHA-256: efa4b3bcf3b647c33fa863bd1ea380509e7a2c601ed6c12194d68f5695587074
font_01_sfnt_off0000e741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE741 12096 bytes
SHA-256: 39ead03eda378bc4e38c9dd4065a0b131139c84c65b3ab2c2f3dd334a6a9ff14
font_02_sfnt_off00010e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E8C 16232 bytes
SHA-256: 8c4f20850708d391b115a482448c651f2a982fbdf20ce527d670e7cbafe14b49