Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d302e248d538c2…

MALICIOUS

PDF

108.8 KB Created: 2021-03-21 23:20:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2725f3a120a9aa4989e899b49cc1d1e4 SHA-1: e1ae110384eda0218aa131a38b9a0590fa0316f8 SHA-256: c2d302e248d538c23962e9d00a18d9fbc04da2787070ec46620aee32e085b4dc
196 Risk Score

Malware Insights

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

This PDF document is identified as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier flagging it as a phishing trojan. The document body, though truncated, combined with the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic, indicates a likely advance-fee fraud scheme. The numerous external links, including a large PDF link farm, suggest an attempt to redirect users to malicious content or phishing sites, potentially involving JavaScript execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://soxebez.ru/award?keyword=ibstock+brick+dimensions+pdf
    • https://xuzuvakewose.weebly.com/uploads/1/3/1/6/131637797/roxotuweker_ladok_nubujujino_pupabafuw.pdf
    • https://diwuxofemuji.weebly.com/uploads/1/3/1/4/131407179/d449f13c4ace.pdf
    • http://uspeh.icu/2006_four_winds_travel_trailer_owners_manualqjpx2.pdf
    • http://jarowulizose.sportsontheweb.net/tawogefodebibuf.pdf
    • http://sutovuresas.mygamesonline.org/delonghi_ceramic_tower_heater_troubleshooting.pdf
    • https://nopidozasu.weebly.com/uploads/1/3/0/7/130738863/a47d52c616d1df1.pdf
    • https://novigavaze.weebly.com/uploads/1/3/0/8/130874354/40efba8ecdd.pdf
    • https://falatunasozenu.weebly.com/uploads/1/3/4/7/134762474/foker_roxixamapik.pdf
    • https://cdn.sqhk.co/zobazulibes/Eihie8J/52272728725.pdf
    • https://cdn.sqhk.co/simikitivo/dx31p3n/royal_farms_chicken_platter_prices.pdf
    • https://jasujoru.weebly.com/uploads/1/3/1/4/131483343/jixido.pdf
    • https://tuvepovuno.weebly.com/uploads/1/3/3/9/133997374/ragetiretozox.pdf
    • https://kezikiwagoxarud.weebly.com/uploads/1/3/0/7/130739267/386bfa7d1d3d1.pdf
    • http://idealslim-italiaoficial.site/is_mild_steel_sheet_magnetic5n6c8.pdf
    • https://cdn.sqhk.co/rawavuzom/gc16wPF/44158828422.pdf
    • http://alexandreablog.com/juvakunakubaxp9er8.pdf
    • http://xulodol.mygamesonline.org/nuwexubosidufimulasiviz.pdf
    • https://cdn.sqhk.co/pirujezexod/iigcfJS/90_s_quiz_game_level_18.pdf
    • https://cdn.sqhk.co/vadavenaw/1T64iaZ/jumijubupanodagimulo.pdf
    • http://makamar.xyz/aphmau_hide_and_seek_map0qsuu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://aed022ca-8a9d-452d-9022-56a74a585a14.filesusr.com/ugd/4d548e_28bef398b55949edb640638c85378b09.pdf?index=true
    • https://b8f7bc2e-5f90-466c-a76c-b8215bfdb3ae.filesusr.com/ugd/9717d9_866dabcf096a4cd583d5872edf1dd77f.pdf?index=true
    • 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_off0001689f.bin
4c17f3a74b319c16ee4d5514a42003963700e0a40360159aa0745c17efb24af3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1689F 5200 bytes
font_01_sfnt_off00017a3a.bin
fa26af04e33cfb6c3a86257c9d56c7434dacc9a112af47a57d4804f1e3822e4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17A3A 12608 bytes

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