Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d43a99134a439f…

MALICIOUS

PDF

73.8 KB Created: 2021-03-20 14:30:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 4f9cca96c7e9b22dffe36762b57e48b3 SHA-1: 5a5775c58c6036dfc0ce1e75d3d79add7ec18434 SHA-256: 80d43a99134a439f3765cf0ed99e2ca87a21846af7bfbd8d247297a2e8f950a6
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan-like behavior. It contains a large number of external links, suggesting it functions as a link farm or SEO spam document, directing users to potentially malicious sites. The presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' strongly indicate an attempt to manipulate search engine results or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • 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://botokaw.ru/wix?keyword=d%2526d+5e+elemental+plane+of+air PDF link annotation
    • http://gofadivus.mygamesonline.org/xexubiluzurilexi.pdfIn PDF document text
    • https://pikimitif.weebly.com/uploads/1/3/3/9/133997727/wizotitabosi_mejeb_luvadakek_teguxurilodox.pdfIn PDF document text
    • https://jirakeleda.weebly.com/uploads/1/3/5/9/135992973/73dce976.pdfIn PDF document text
    • http://lijonotogi.scienceontheweb.net/the_complete_book_of_questions_free.pdfIn PDF document text
    • https://figowemepiwe.weebly.com/uploads/1/3/1/3/131398533/3d8d8cf545.pdfIn PDF document text
    • https://karoxenerom.weebly.com/uploads/1/3/0/7/130739074/b6a15daca407.pdfIn PDF document text
    • https://godowipi.weebly.com/uploads/1/3/4/5/134520373/buzosipevuriwej.pdfIn PDF document text
    • https://derugipuze.weebly.com/uploads/1/3/0/8/130814861/jomejuge.pdfIn PDF document text
    • https://sevafigetof.weebly.com/uploads/1/3/4/9/134902911/f2ef0.pdfIn PDF document text
    • https://defosojuregoko.weebly.com/uploads/1/3/1/3/131383900/tokisesalonobakutara.pdfIn PDF document text
    • https://nesipemuwazona.weebly.com/uploads/1/3/4/8/134881126/lenutolutitef.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/Sxibbgd/antimicrobial_susceptibility_testing_protocols_richard_schwalbe.pdfIn PDF document text
    • https://tenimuleletef.weebly.com/uploads/1/3/4/3/134343202/nupexiwemitidijafis.pdfIn PDF document text
    • https://xomugiwonin.weebly.com/uploads/1/3/4/2/134266294/9268636.pdfIn PDF document text
    • https://cdn.sqhk.co/samivegin/Ojbhhhi/wild_west_redemption_gunfighter_shooting_game.pdfIn PDF document text
    • https://xajakubadom.weebly.com/uploads/1/3/0/8/130874473/lekeku_nebokuk.pdfIn PDF document text
    • https://pixiguva.weebly.com/uploads/1/3/2/6/132681827/latapetiboz_fewulalituxuga_xamowel.pdfIn PDF document text
    • http://sifimomikev.sportsontheweb.net/fluke_115_vs_117_reddit.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/hhP4jil/tunobawawupavewonutafago.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/Dgijfjj/beli_pulsa_listrik_bayar_belakangan.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/0a03e13c-4004-4776-9a74-bfa5bb9bc55a/how_to_be_a_good_housewife_50s.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96812844-3b71-4eba-a902-416ff74465e0/pebble_smartwatch_battery_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54cdcf20-3708-4c27-b4e6-6ca919953c1d/66191384709.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed5527e0-f346-496b-bf4a-b9260019c9f3/kuvazubozes.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_off0000e7e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E5 4156 bytes
SHA-256: 4137e011fb50e940388b7a91a31e36f70741d8ce55ef6fbc7fb0314564e06879
font_01_sfnt_off0000f615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF615 10612 bytes
SHA-256: 37a40e31c785a8448ef75ea6983cfe7b78f21ffccb34e22ff262c75e61099e44

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