Malicious PDF — malware analysis report

Static analysis result for SHA-256 3225f4c05ea38da8…

MALICIOUS

PDF

83.6 KB Created: 2021-03-23 16:00:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 3437a8f4c1169b36f0f27e3f3ecb3e99 SHA-1: f6b097ec7725a4db39f2a24ed52d99065a56233a SHA-256: 3225f4c05ea38da84b6c077e38687ed2957a10c4883272326afb0796bf633120
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are part of a link farm, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a lure to a malicious site.

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://xezojetit.ru/wix?keyword=cricket+htc+desire+510+unlock+code+generator PDF link annotation
    • http://usesol.xyz/why_did_he_disappear_after_two_datesvg3i2.pdfIn PDF document text
    • http://chambre.xyz/43942854981a3495.pdfIn PDF document text
    • http://kpupnov.pro/foxulexafubufaxis25t73.pdfIn PDF document text
    • https://zebazowis.weebly.com/uploads/1/3/4/3/134310266/6356694.pdfIn PDF document text
    • https://lutexoromos.weebly.com/uploads/1/3/4/6/134676592/sikibuterawuk_jipanemedidaxi_sanod.pdfIn PDF document text
    • https://lirobepofuneve.weebly.com/uploads/1/3/0/7/130740173/jugedizofajelolo.pdfIn PDF document text
    • http://ueuniti.xyz/dejifebulewogemexgna97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450896/normal_600dc9464b8a8.pdfIn PDF document text
    • https://zuxivojeduzudog.weebly.com/uploads/1/3/1/3/131381782/9151642.pdfIn PDF document text
    • http://bit7.top/tactical_performance_6_piece_knife_set60ouo.pdfIn PDF document text
    • http://batmbatm.ru/do_pink_dye_test_have_evap_linescrjx3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470524/normal_6035186c582e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423452/normal_6044ca2cf0968.pdfIn PDF document text
    • http://osmosiotzs.fun/putowifowebevtpvk0.pdfIn PDF document text
    • https://vozokeku.weebly.com/uploads/1/3/1/8/131857213/7082698.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/38281226250.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/kenmore_70_series_heavy_duty_washer_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fea78d9-5e09-43f8-b331-6594f0ed5f8f/pavobinebavezewomisav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/428e62ee-1ceb-4f5c-a1ad-78ec1c32f13c/trane_mini_split_heat_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e382bd97-c162-4cf3-ba9a-94abf8beee7d/19881831457.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE3 5488 bytes
SHA-256: 5d46bb988ed1f9f4a1ff1d752290d3e9b040d91af23d956d5b76db00db2bf2f9
font_01_sfnt_off00010d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D85 10908 bytes
SHA-256: 16e6b5d93aed8eb1e074f3001acd601f028d517ec1a1e70c342178ef64945345
font_02_sfnt_off000132ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132AE 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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