Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b86653c1a839664…

MALICIOUS

PDF

76.2 KB Created: 2021-04-03 16:22:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f97e764e35b7631eb1d1f3a71e832734 SHA-1: 582dced557163e2e67d0b467fdb223dd00dce1fa SHA-256: 8b86653c1a839664c2c4880996268d1a73c8c9e99150d70e658ebea689aa9f31
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 0.9996

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://crophysi.ru/aws?utm_term=diy+concrete+shooting+bench PDF link annotation
    • https://cdn.sqhk.co/wesaduleb/6nNjdzp/medium_sized_scruffy_dog_breeds.pdfIn PDF document text
    • https://cdn.sqhk.co/zafazegig/mjij2jj/25260411504.pdfIn PDF document text
    • https://cdn.sqhk.co/xigofidiw/ghuSMgg/nails_designs_white_and_gold.pdfIn PDF document text
    • http://phrensy.co/80533957025r5nvo.pdfIn PDF document text
    • https://cdn.sqhk.co/xopigotax/62ijMid/let_s_play_basketball_3d_land_part_1.pdfIn PDF document text
    • https://cdn.sqhk.co/bikulatitaxe/cmjdJhj/formation_cesam_statistiques.pdfIn PDF document text
    • http://xepuxesadara.mypressonline.com/tipos_de_sistemas_de_informacin_en_una_empresa.pdfIn PDF document text
    • https://cdn.sqhk.co/pewonogip/jjfBhhC/lipuji.pdfIn PDF document text
    • http://vigirorimikana.medianewsonline.com/ladosofune.pdfIn PDF document text
    • https://cdn.sqhk.co/libarazituw/jihjbgg/19674451794.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluxoni/ghDjfjd/kozuzamarexibefimizebon.pdfIn PDF document text
    • https://cdn.sqhk.co/dejijadu/cOheKuQ/bixorola.pdfIn PDF document text
    • https://cdn.sqhk.co/gotuxixovumu/dNpDmcU/minecraft_java_edition_or_windows_10_2020.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/xekurawirotax.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/fheiiia/dupumijogazalo.pdfIn PDF document text
    • http://axecheat7.xyz/how_to_fix_ink_cartridge_error_in_hpuisq0.pdfIn PDF document text
    • http://bodaweziwov.mypressonline.com/arabic_to_urdu_dictionary.pdfIn PDF document text
    • https://cdn.sqhk.co/zifuvifiweva/a6b4J5P/rally_coach_real_appeal_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/rejiwosujupa/9gdhjif/qu_you_ning.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tajiroxajesolut.atwebpages.com/best_holster_for_sig_p938_with_laser.pdfIn PDF document text
    • http://bafuwujix.atwebpages.com/falikabuxowusonolawut.pdfIn PDF document text
    • http://molagegivijoxu.onlinewebshop.net/zurog.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CE 5060 bytes
SHA-256: 5539f0c33979462ba47bf2efaee3e3903b5f675f272fd518d66e4e29fc14f6be
font_01_sfnt_off0000fb13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB13 11412 bytes
SHA-256: 3540a6aad1524229415f3f92431b54fad453a3b00a89ab0b829e78c77c791de8

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