Malicious PDF — malware analysis report

Static analysis result for SHA-256 629312185b341e9e…

MALICIOUS

PDF

91.0 KB Created: 2021-02-15 15:14:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 84c89d9fa111cf7f5f651c5adde79204 SHA-1: 6f2f818b93786174cfca967e2a981c432616bf85 SHA-256: 629312185b341e9e13223497a575d8a9fd037c484456dab4c58bc4aec0e53407
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0' strongly indicate a phishing or malicious intent. The document body, though heavily obfuscated, contains text related to 'divination cards path of exile', likely a lure to attract victims to click on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/123?utm_term=how+to+use+divination+cards+path+of+exile PDF link annotation
    • https://jolosusopafo.weebly.com/uploads/1/3/4/0/134097145/sazatu-puxovuvivovix.pdfIn PDF document text
    • http://joxesozijemago.iblogger.org/1626177381.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476420/normal_601d963a1e346.pdfIn PDF document text
    • http://nepufikusugepa.iblogger.org/53613713444.pdfIn PDF document text
    • https://zuzowasef.weebly.com/uploads/1/3/4/3/134351381/da8bcf976a91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393016/normal_5fe5e2144e459.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495043/normal_600df7e6b4f96.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485005/normal_5fc93fb78a085.pdfIn PDF document text
    • http://bobixuposu.22web.org/rajafepirekidabawajupa.pdfIn PDF document text
    • https://kesupegujofoju.weebly.com/uploads/1/3/5/3/135388852/8368488.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501998/normal_5fdb84e05b97c.pdfIn PDF document text
    • https://xasuzetevoke.weebly.com/uploads/1/3/2/6/132681443/9853746.pdfIn PDF document text
    • https://tedogiji.weebly.com/uploads/1/3/0/7/130775371/zedovalemajo_rapusarijab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xewenofos.epizy.com/zepekakefusiteril.pdfIn PDF document text
    • http://lufirapubabe.epizy.com/gosumegixurijapem.pdfIn PDF document text
    • http://suvowafavij.epizy.com/rowip.pdfIn PDF document text
    • http://gokobuvutojo.epizy.com/5259275799.pdfIn PDF document text
    • http://nulanajivokavos.rf.gd/driving_drift_car_racing_game_mod_apk.pdfIn PDF document text
    • https://divination-card-poe.netlify.app/In 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00012fee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12FEE 25544 bytes
SHA-256: 82c8a7466d4a5da0a8169059f58faf9869e816ce77fc0547e27cf71e6081e4e9
font_00_sfnt_off0000f5e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E1 5424 bytes
SHA-256: f9e0c13fe6d0792093850b35894ba18ad46fac680fd2e4b99e09dd321c069ae5
font_01_sfnt_off0001086c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1086C 11616 bytes
SHA-256: 7d0052fefa50c17df3ac724e30e38f815e6eadab58a4b049cc2b4fbda16db740

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