Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ca696c61e7b6fa…

MALICIOUS

PDF

76.3 KB Created: 2021-04-06 09:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 2ebcaab78a3676615eec54fee61446f9 SHA-1: 9b75a9c553b673a62343c8345cdb9c30758b409f SHA-256: 76ca696c61e7b6fa838c2237018b34bf9480bfae6415f7d740c8b9489a0e0845
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, 'https://crophysi.ru/wix?keyword=glock+43+guide+rod+laser+green', is the primary indicator of malicious intent. While no scripts were explicitly extracted, the nature of the PDF and the malicious link suggest an attempt to lure the user to a phishing or malware distribution site, likely as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/wix?keyword=glock+43+guide+rod+laser+green In PDF document text
    • http://rerubin.space/ap_language_and_composition_argument_essay_outlineob075.pdfIn PDF document text
    • https://cdn.sqhk.co/winogolelog/iihi9ge/kiratuwivamijufijoso.pdfIn PDF document text
    • https://cdn.sqhk.co/dasofuduveje/hfokfic/puposoraxutesiwibabuwe.pdfIn PDF document text
    • https://cdn.sqhk.co/mudemodox/hcjjgj8/song_hits_magazine_80s.pdfIn PDF document text
    • https://cdn.sqhk.co/kopakezoxek/cgjhebt/lozudolojidezomevut.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/hjBhdfI/othello_game_how_to_play.pdfIn PDF document text
    • http://bbcua.site/26064601466p4o23.pdfIn PDF document text
    • http://opros.xyz/advantium_120_control_panel_lockedvrwlx.pdfIn PDF document text
    • https://cdn.sqhk.co/mifopanikil/G4iaVH6/vefonodijupimimisovu.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/jhaiijj/puppy_wallpaper_for_mobile_phones.pdfIn PDF document text
    • https://cdn.sqhk.co/jumapevuz/ZjajbSW/30807779770.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bulalowisu/how_to_remove_print_head_epson_xp-400.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c991018-5e0d-4a20-9713-b6d24fdf0dd5/48166055916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caccf8e6-55ba-4ff0-bbc4-5b1e235be9b6/70053407128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19eb1497-66b8-48f7-adec-bbf9638b4c1d/nezemikugideriped.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/051869a9-f76a-4dff-b15d-668b7083aa32/hp_deskjet_ink_advantage_2545_ink_cartridge_failure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9be79b5a-348f-4bf7-b721-40d610ef9f15/vewuvegivuloduji.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/is_there_a_kid_version_of_cards_against_humanity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59acaa2d-be06-4841-aecb-3a98c5c788ce/el_amor_en_los_tiempos_del_clera_resumen_corto.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF03 5256 bytes
SHA-256: 0eaf909fa85e8a15d406aca0d08892fe401dd31bcd38312f7adb34b2d2849a4f
font_01_sfnt_off0000f0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E9 10892 bytes
SHA-256: bb7d29ff4c1e25e3fb407b99cb26afb2bef6d0d26d899672c5fc86815997b80e
font_02_sfnt_off000115d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115D0 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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