Malicious PDF — malware analysis report

Static analysis result for SHA-256 97196ae055dd3230…

MALICIOUS

PDF

80.7 KB Created: 2021-03-21 07:39:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1f1175a0cb7b8ef2d59eec98dca9bb20 SHA-1: 14a7552004c9fcc42e3c5afcea5b7ad48d4f30eb SHA-256: 97196ae055dd3230eef0cdab2593adac78193bf91164146a62f6ea8d990d9438
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 0.9990

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/award?keyword=meteora+hiking+map+pdf PDF link annotation
    • https://cdn.sqhk.co/rufosopufu/igjhj8g/fotutulatedi.pdfIn PDF document text
    • http://wizudaneku.iblogger.org/becrypt_disk_protect_user_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/konafomaz/gclicXt/dude_perfect_toys_target.pdfIn PDF document text
    • https://bozuwosumexoxal.weebly.com/uploads/1/3/2/6/132682772/8080650.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413866/normal_5fd95bdabb3d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485589/normal_5ff3621ce6b3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407724/normal_602e11aeca6ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476780/normal_603f0a4826e2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413846/normal_6031e8e7d5837.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408995/normal_6014b581e223f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386609/normal_600e418b5a54f.pdfIn PDF document text
    • http://dagefose.22web.org/wagekejalimubumebazunidu.pdfIn PDF document text
    • http://noseboxejekuxaz.22web.org/2986332927.pdfIn PDF document text
    • https://cdn.sqhk.co/nokowifupe/jbhgLjc/73204207375.pdfIn PDF document text
    • https://lufojegixibebaz.weebly.com/uploads/1/3/1/4/131407324/gawisil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405644/normal_5febd39e22bce.pdfIn PDF document text
    • https://tuvaxijilitug.weebly.com/uploads/1/3/4/6/134668501/7403415.pdfIn PDF document text
    • https://cdn.sqhk.co/tulazofava/fiinN4i/9847152029.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426423/normal_5fe1ab30114d2.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://rabuwupitakif.rf.gd/less_than_zero_song_danzig.pdfIn PDF document text
    • http://ravenofudaviv.rf.gd/safety_not_guaranteed_alternate_ending.pdfIn PDF document text
    • http://dejogamolefip.rf.gd/pikubutarowonabipupug.pdfIn PDF document text
    • http://difatute.rf.gd/49156885022.pdfIn PDF document text
    • http://kugogawi.rf.gd/lagu_engkau_bidadariku_akim_empayar.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_off0000f21e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21E 5100 bytes
SHA-256: 5550d3eb4eac2bbef3a7e5024596b52425b10b8d908e09171692b36c17906af7
font_01_sfnt_off00010354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10354 10472 bytes
SHA-256: ff32482a9b61bcba96dfc243317f985dbad432d879b43ba897eee8a511ae1659
font_02_sfnt_off00012729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12729 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333