Malicious PDF — malware analysis report

Static analysis result for SHA-256 d19459916e3268c7…

MALICIOUS

PDF

75.1 KB Created: 2021-03-31 00:00:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: e3f8c5890bbc22feb42777e0c7accc38 SHA-1: bc17ea9accafcc5ce14b6e2410905cadf5e1ace6 SHA-256: d19459916e3268c7961951d7ec22273f24a0b38dd39c97425940a8e62d153843
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to a Sony remote control, aiming to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/strik?utm_term=sony+str-dh720hp+remote+control PDF link annotation
    • http://procripton.com/zulorukutedoxivazev3rkl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389804/normal_5ff712a043d49.pdfIn PDF document text
    • http://milansit.space/demukopuxisuvolalajoxegok4aqz.pdfIn PDF document text
    • http://nugowimabu.mywebcommunity.org/65th_national_film_awards_2020.pdfIn PDF document text
    • http://ca-manalapan.space/327876858611ur40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_6013e692e5963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453326/normal_5fd1255f1a7b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444853/normal_5ff4d88ca2fef.pdfIn PDF document text
    • http://italiabeach.space/rush_trucking_jobsphvj7.pdfIn PDF document text
    • http://ourfanz.com/gucci_mane_new_album_downloadbb3vo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467586/normal_60277d8d1ec2c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f803bf1b-e1c2-47f6-a41f-c9785c88fbd4.filesusr.com/ugd/bf07b1_2fcb1191636344eda32a7e8548dd00d8.pdf?index=trueIn PDF document text
    • http://tudixuzaw.onlinewebshop.net/charisma_on_command_charlie_houpert.pdfIn PDF document text
    • http://tebuwawezizafes.onlinewebshop.net/dyson_v6_motorhead_replacement_battery.pdfIn PDF document text
    • https://e19809cf-df80-48c1-9975-8599b001ad7a.filesusr.com/ugd/062cdf_6b02c2121fb14785b589b93dd35d9910.pdf?index=trueIn PDF document text
    • https://76a725e8-946c-4ae9-9249-cda469d35108.filesusr.com/ugd/83c8cc_9878326d275b424eb02eebe425eb5ad9.pdf?index=trueIn PDF document text
    • https://69b3109a-7cce-4514-9193-d2106d9976ab.filesusr.com/ugd/3c2969_c2a9bd5955904001a478fb25bea59357.pdf?index=trueIn PDF document text
    • https://f39f7cea-6337-46de-af4f-699959e6db0a.filesusr.com/ugd/004672_2e98ec9028b942ef8b1bb06262c65abe.pdf?index=trueIn PDF document text
    • https://601bead5-a720-4f65-98db-62fe2a42cb91.filesusr.com/ugd/0e52b4_8a3ff8fb4d374809a889c71242ead08c.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5FE 5692 bytes
SHA-256: 2feeae7adec36e7e38105ff8f3c09cdedad068f787e10df6a10603aa7ab1f1e7
font_01_sfnt_off0000f952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF952 11032 bytes
SHA-256: 6dabfa06ca366eb844d0f6127476a4d3e3f2cf96fc45925a25ce47a04ac20def

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