Malicious PDF — malware analysis report

Static analysis result for SHA-256 788963690e46a77d…

MALICIOUS

PDF

85.3 KB Created: 2021-03-21 23:25:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 142d3e94bb90063aefce640a0741e02a SHA-1: e9c120872c61ed1e690166144f0f24963287c4bc SHA-256: 788963690e46a77d4f376c95d6eb93784cc0334552ce6c51d6f128f8fbecc349
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which are hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, appears to reference a barcode scanner manual, serving as a lure to direct users to these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://gimoguvi.ru/wix?keyword=alanda+ct007+barcode+scanner+manual PDF link annotation
    • https://cdn.sqhk.co/rogudokives/tYyUgif/adventure_escape_cult_mystery_chapter_7.pdfIn PDF document text
    • http://optalpha.com/logistics_and_supply_chain_management_diploma_salary58p3t.pdfIn PDF document text
    • http://pububasolemi.22web.org/82644596870.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424328/normal_6028b0f4c5178.pdfIn PDF document text
    • http://ketousa.site/fifty_shades_darker_movie_download_dual_audio_480p1y0v8.pdfIn PDF document text
    • http://lnstagramcopyrigtservice.com/libototawevuzifidu424rc.pdfIn PDF document text
    • https://cdn.sqhk.co/nanagajog/fp6rGFi/nelofagemoroj.pdfIn PDF document text
    • https://lelopotive.weebly.com/uploads/1/3/0/7/130738546/a25936578760.pdfIn PDF document text
    • http://biomaniks.website/voltas_air_cooled_chiller_operation_manualfwgte.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491450/normal_604e70340f9f8.pdfIn PDF document text
    • http://jegepev.22web.org/rotatudalumixetusejo.pdfIn PDF document text
    • http://morpeoplelife.ru/lofolarixugo45rz9.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/hjjbigl/spears_games_50_games_compendium_instructions.pdfIn PDF document text
    • http://goodshopsales.xyz/ritatusolozucmay.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367911/normal_5fc9adf36d546.pdfIn PDF document text
    • http://wodunobogigav.22web.org/66996921040.pdfIn PDF document text
    • http://detonic-hypertonie.website/rose_flowers_images4k829.pdfIn PDF document text
    • https://fofapabijutoza.weebly.com/uploads/1/3/4/7/134713913/gurabazo_xinilopojivobev_litijexobur_dirabe.pdfIn PDF document text
    • https://cdn.sqhk.co/xetilibul/jZhfgjw/top_100_christmas_songs_of_all_time_list.pdfIn PDF document text
    • http://naykaryadom.fun/sketchup_2013_free_download_32_bit3dql1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476939/normal_5fe45ee02b110.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
    • http://fasonumi.rf.gd/how_much_money_does_a_computer_programmer_make_a_month.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_off00010078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10078 5272 bytes
SHA-256: 54fbc683a21d22ebe6ab394012381611e5cf8cd7e6d4697a76fc6ae94ced53af
font_01_sfnt_off00011240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11240 11660 bytes
SHA-256: b2953330e24c2453bf10a6c17363643b2081b9ea483c56d4bf7da4a423f87357
font_02_sfnt_off000139a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139A6 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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