Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf542caf5200fc5c…

MALICIOUS

PDF

75.8 KB Created: 2021-03-15 14:25:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c00f641d51cf81231f235be8b957358e SHA-1: 22df6f0f3739b2f59670cc403a65f89813b234f9 SHA-256: bf542caf5200fc5cd3670469bc6f0cd1876c3d961b97278b7b9c63f116ce57b9
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it uses social engineering tactics like a fake download button and a QR code lure. The embedded URL `https://ponafet.ru/wix?keyword=weedeater+one+875+manual` is a strong indicator of a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and detection names suggest it's designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ponafet.ru/wix?keyword=weedeater+one+875+manual
    • https://cdn.sqhk.co/demexadol/Wgjghhi/friday_the_13th_killer_game.pdf
    • http://show-visitor.xyz/ncert_maths_book_class_10_in_english_solutionql1mv.pdf
    • http://appeal-ig.com/820053542165mjwf.pdf
    • http://natural-shop.info/lamupebubisagrpje.pdf
    • https://cdn.sqhk.co/kekelivig/xBgevtL/market_garden_brewery_owner.pdf
    • https://cdn.sqhk.co/lekixubegewo/Ahchhjd/84140499614.pdf
    • http://parrrtner.xyz/up_rto_vehicle_information_detailxe8ni.pdf
    • https://cdn.sqhk.co/kolazapikib/hhTiabs/knighthood_lost_sands_riddle_hunter_of_astellan.pdf
    • https://cdn.sqhk.co/pegidago/jgYgcge/getabediko.pdf
    • http://dehydratedoriginalgoodness.com/maggie_a_girl_of_the_streets_chapter_16_summary4znv8.pdf
    • https://cdn.sqhk.co/bikegola/VmR2hjD/bounty_hunt_western_duel_game_mod_apk.pdf
    • http://senteber.site/14355028786ief52.pdf
    • https://cdn.sqhk.co/sofizagumup/a96bXvS/57061091464.pdf
    • https://cdn.sqhk.co/tipefima/hipHFib/1341759050.pdf
    • https://cdn.sqhk.co/mudogaxi/Zgdo8hh/jikizezivoz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mimitudoxofi.rf.gd/51166839730.pdf
    • http://wixezujixib.epizy.com/good_full_form_of_akanksha.pdf
    • http://zidumaxatu.epizy.com/christian_bible_study_books.pdf
    • https://uploads.strikinglycdn.com/files/38d52824-2cd4-49a7-a3aa-34c83539ead1/wuzaraxe.pdf
    • http://gazonenewotife.epizy.com/92335549746.pdf
    • https://uploads.strikinglycdn.com/files/9f0190e4-21d6-4f04-a6ba-dae1f66c8f97/how_to_study_geotechnical_engineering.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8d9.bin
c54780d5b364f63765e062ca796b5cab437d17af37aef2cc0c3dcfdc028bff48		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D9 5204 bytes
font_01_sfnt_off0000fa87.bin
51dfc67dfb06386073b0a78eadccc4a9a359fd8403bd8f9b082acca766385925		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA87 12096 bytes

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