Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d562947d152a868…

MALICIOUS

PDF

75.5 KB Created: 2021-04-01 02:24:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: a1299bb2840298f1d54e7825049b2ea8 SHA-1: 5004217ed109cea19c22745d5eeaaa95fb61f03f SHA-256: 4d562947d152a8687cc040664ec8516c433d7eb5b9e20e3f0cc7e4772600fd4a
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and an ML classifier indicated a high probability of maliciousness. It contains suspicious links, including an invisible link to 'http://com-login8.xyz/507928141541e70q.pdf', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, references 'Maplestory pathfinder leveling guide', likely a lure to entice users to click the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://jacksth.ru/wix?keyword=maplestory+pathfinder+leveling+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387698/normal_6030212cb83ba.pdfIn PDF document text
    • http://com-login8.xyz/507928141541e70q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_6017beedc800c.pdfIn PDF document text
    • http://tadezutalowebe.22web.org/annealing_process_steel.pdfIn PDF document text
    • http://logvoz.ru/fake_caller_id_online_freerhtvx.pdfIn PDF document text
    • http://hangzhoumetal.ru/948068106664hed4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470040/normal_5fe51b980e523.pdfIn PDF document text
    • http://tiktokhd.design/hardest_riddles_without_answersda0zb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368226/normal_605d62d38620b.pdfIn PDF document text
    • http://batizilojado.22web.org/74845149070.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/161388ec-b90b-4f46-ac30-399cbafd1e0d/19707434596.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/royal_mail_envelope_size_template.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/chennai_express_3gp_movie_for_mobile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1da3af56-54e5-40b7-8b09-51c970b9215a/mismeasure_of_man_gould_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/what_is_the_main_idea_of_the_story_beowulf.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/porque_le_salen_granitos_en_la_cara_a_mi_beb.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/fudirasiwibuwubamex.pdfIn PDF document text
    • http://gafelen.epizy.com/all_the_bright_places_book_quotes_with_page_numbers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64d42da6-9bc6-44a7-8b12-12642a40cacc/kesigilanujuwunid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88308347-4346-4232-b346-b7b17b7a9b51/sobelanodadesijanikutem.pdfIn PDF document text
    • http://gunuguduwurenog.epizy.com/ccna_braindumps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a88ef0e8-5a2e-459b-bd27-116bc45802bf/how_to_adjust_signia_hearing_aid.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_off0000ea05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA05 5468 bytes
SHA-256: ca21fd0a30d7c49bd726737942e497a09a52a10dbd0c57700f0edc02408b2986
font_01_sfnt_off0000fcb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB7 10636 bytes
SHA-256: 48d19a59fd44b36b7fff3130e3ff9b4d33fa501a9341d928f2fa6f0d5f17446b

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