Malicious PDF — malware analysis report

Static analysis result for SHA-256 84be450f05be2468…

MALICIOUS

PDF

78.4 KB Created: 2021-06-03 04:24:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 640935a6e8ff7d859bc98eacc9472f8c SHA-1: 6b21775d8cdb629a554552297c201452541ebcae SHA-256: 84be450f05be24687e7506889a158ce43a8e1222ff22eb89e56d2292f20b63db
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or distribution network. The primary lure appears to be a fake movie download, a common tactic for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, likely related to driving traffic to malicious sites or distributing further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pistant.ru/pbw?utm_term=chennai+express+full+movie+download+mp4+for+mobile
    • https://girowotejetut.weebly.com/uploads/1/3/1/4/131406843/mifemelevegepor_wojuse.pdf
    • https://bategasef.weebly.com/uploads/1/3/2/7/132712490/motativa-pufesexegona-xaxiwisuko-zamesefakono.pdf
    • https://static.s123-cdn-static.com/uploads/4481422/normal_60089d91e7c0f.pdf
    • https://vilavabakawo.weebly.com/uploads/1/3/1/6/131607043/6630990.pdf
    • https://pivokobofu.weebly.com/uploads/1/3/4/6/134648089/tidowonejajifonozepi.pdf
    • https://dedanolelixavo.weebly.com/uploads/1/3/4/3/134305263/5255015.pdf
    • https://tisegibak.weebly.com/uploads/1/3/1/3/131380339/jexenexaxarawix-wezibuno-lilipe.pdf
    • https://zipufalazuviw.weebly.com/uploads/1/3/1/8/131856517/eb1430c6f8ea0.pdf
    • https://rozeravepirasaj.weebly.com/uploads/1/3/2/8/132816036/koxigofaj-vegaruvele-bugukitumamez.pdf
    • https://nezogifoxo.weebly.com/uploads/1/3/1/6/131637357/tobopus_tenoxodanabesa_bojasugiber_rawuluzif.pdf
    • https://goxejebifebiv.weebly.com/uploads/1/3/2/6/132682819/ruwamirifiki.pdf
    • https://jupavovol.weebly.com/uploads/1/3/4/3/134314217/vanenoneget-vumerulod.pdf
    • https://cdn-cms.f-static.net/uploads/4495251/normal_6029799e5f21a.pdf
    • https://vebaxifi.weebly.com/uploads/1/3/4/3/134360040/dasedike_rifibeg_kazujaj.pdf
    • https://cdn-cms.f-static.net/uploads/4459917/normal_60398614cd9fc.pdf
    • https://xuvuvigaxopezut.weebly.com/uploads/1/3/4/7/134721928/juraribaliga_sejapetizariva_nozibo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3ccb0c8c-52db-4075-a992-fc0c15d2ede8/38850101971.pdf
    • https://uploads.strikinglycdn.com/files/14661dda-6ea2-446f-8ec7-eefd49bc89f6/plastic_bag_warning_label_requirements_us.pdf
    • http://tarogifere.pbworks.com/f/pirates_of_caribbean_5_full_movie_in_tamil_download.pdf
    • https://uploads.strikinglycdn.com/files/9b7f31b2-2040-4604-a40c-7dfa6669afe5/how_to_program_orbit_sprinkler_timer.pdf
    • http://wekibivu.pbworks.com/w/file/fetch/144432663/manual_record_keeping_for_small_business.pdf
    • http://jebodigezev.pbworks.com/f/things_fall_apart_important_quotes.pdf
    • http://pilujibos.pbworks.com/w/file/fetch/144491094/mawubeguvojonaxuluwefaf.pdf
    • http://zixereves.pbworks.com/w/file/fetch/144532329/levidajanabufofotutabaja.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_off0000f487.bin
4db74c8fc74b6e3dd7aec9ae838113f4f9affe8cd4db9c461064f5380baa4f00		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF487 5632 bytes
font_01_sfnt_off00010799.bin
26e45d219638865976b93db7c4c9ffa7f78ae65e8d6e0b5869d4aa291f0319f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10799 10572 bytes

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