Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3cc04f7b4bf4a16…

MALICIOUS

PDF

66.1 KB Created: 2021-04-01 16:18:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c2dd9f283fedb539ad69c17a3d7ffa2e SHA-1: 806c427c05e49c4675bae512a58ab48b766703a7 SHA-256: e3cc04f7b4bf4a162b2845a000e34b7b4a6629120094016bf3be6a01fd5034cc
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=ecu+club+basketball+schedule PDF link annotation
    • https://cdn.sqhk.co/bamazaludez/iUC5Rjb/xalav.pdfIn PDF document text
    • http://maxuruz.22web.org/43353962625.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/zoGgcjb/42795231237.pdfIn PDF document text
    • http://powerpoint4you.ru/what_is_categorical_imperative_ethicsrkley.pdfIn PDF document text
    • http://parhelifrl.space/8323720166811292.pdfIn PDF document text
    • http://itclick.info/baldurs_gate_dark_alliance_2_ps2_walkthrough42x1s.pdfIn PDF document text
    • http://elinekici.online/snes_games_coming_to_switch_20207kcmg.pdfIn PDF document text
    • http://nixekagog.22web.org/59690914346.pdfIn PDF document text
    • http://sell-toclick.online/mitomebuwenopuwadisojapa1azi7.pdfIn PDF document text
    • http://kpovli.ru/53098781968rzcrx.pdfIn PDF document text
    • https://cdn.sqhk.co/jenojigise/hfBjf5E/15912588091.pdfIn PDF document text
    • http://hrushch.space/99260034633p3u6k.pdfIn PDF document text
    • http://allfreebets.ru/fosutupofusawixusobutaxefvr8vl.pdfIn PDF document text
    • http://keep-travel.com/fesifebm5kj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://882e4f53-a7e1-4d4a-89e8-a6e6d9f9b805.filesusr.com/ugd/9a13d2_d841474e49a14fbaad94cc2207f2479e.pdf?index=trueIn PDF document text
    • https://34e51215-b586-4e01-b3ea-a219475a7b91.filesusr.com/ugd/46481b_c32e5046dda546ce9b11f5c786a779a6.pdf?index=trueIn PDF document text
    • http://rogofijanititad.epizy.com/chicago_bears_schedule.pdfIn PDF document text
    • http://gezisekovedafow.epizy.com/teradek_cube_755_firmware.pdfIn PDF document text
    • http://lufafutogixafu.rf.gd/cardiomiopatia_takotsubo.pdfIn PDF document text
    • https://7e073981-ad1c-4081-8dc0-76946ba36063.filesusr.com/ugd/c4f63d_aec871c10cdb45f8b6d5440849ce03ae.pdf?index=trueIn PDF document text
    • http://kesajuwigiferu.epizy.com/65169212270.pdfIn PDF document text
    • http://kokamusosimabo.rf.gd/tifoxuzidotalajozarowumor.pdfIn PDF document text
    • http://pebuvigak.rf.gd/disneyland_paris_map_2021.pdfIn PDF document text
    • http://kiwejip.epizy.com/kizubiligivij.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_off0000c8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F1 5092 bytes
SHA-256: 0afd99b27d58a3433b0711e99531acc8697af1b5767a950fa76c1fd8c2fb0c7c
font_01_sfnt_off0000da3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3F 9620 bytes
SHA-256: 63ea2421f96bbb2b9d92c3bdaf783ac5527be67edea54c71bbb054745dabfb0d

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