Malicious PDF — malware analysis report

Static analysis result for SHA-256 9296c4aba2287eb5…

MALICIOUS

PDF

65.7 KB Created: 2021-06-12 01:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 394f170c7f4eda3dc9afdb6bf11b3d8d SHA-1: 10d8caae27577209100f35e7aa1312a0de0c50c0 SHA-256: 9296c4aba2287eb5f9467f411da5fa5db03ff1b9af095a28196c2a04cc73f514
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, specifically flagged as a phishing trojan. It contains a large number of external links, many of which are part of a link farm hosted on disposable domains, suggesting an attempt to direct users to potentially malicious or scam-related websites. The document body, though heavily obfuscated, references 'Minecraft bedrock command block codes', likely a lure to attract victims.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://philabc.ru/pbw?utm_term=minecraft+bedrock+command+block+codes PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4456377/normal_5ff75ebfbea8c.pdfIn PDF document text
    • https://fefokivaz.weebly.com/uploads/1/3/0/7/130776727/328407.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422133/normal_60bc3241b455e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464710/normal_602ae42015928.pdfIn PDF document text
    • https://wojaluzuzuduku.weebly.com/uploads/1/3/7/4/137498881/tolosad-rulavokuxuwuk.pdfIn PDF document text
    • https://vavapeta.weebly.com/uploads/1/3/4/8/134848771/b31407b074.pdfIn PDF document text
    • https://mamunazeve.weebly.com/uploads/1/3/0/8/130814121/xexinakixuposovur.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/a5592706-b31b-4c39-b8c9-0c4c50a08f8f/dfs_cdma_tool_crack.pdfIn PDF document text
    • http://rugewenuzed.pbworks.com/f/12412311865.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/724daf08-48d2-48d0-99ed-343452437992/gmat_official_guide_2021_ebook__online_question_bank.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c937c32-bd5b-458c-9678-20e0eadad168/fituxidutujozefofuwufa.pdfIn PDF document text
    • http://sizolasipape.pbworks.com/f/66107967466.pdfIn PDF document text
    • http://redelaw.pbworks.com/f/44302906105.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/629015c1-cea3-4513-86d4-bcb5532b2b12/benilaxilif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b50f1dd-1a77-4435-9577-401bd826e581/bitasonupomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/394d0083-2c91-47c4-8f56-7a8b6fe707a9/what_does_follow_the_rabbit_hole_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deff15b5-95c6-4f62-baa2-c10aa5b73609/10386224129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29de8b7d-1d8a-4e3b-bc61-c7846642ead9/43929788327.pdfIn PDF document text
    • http://gizonokape.pbworks.com/w/file/fetch/144973278/49739443122.pdfIn PDF document text
    • http://larabefejaji.pbworks.com/f/what_time_does_amazon_restock.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_off0000c5ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5ED 5376 bytes
SHA-256: c6f3a26f61fcc856de430b1e9639e81ccd341bce3e71994f175ecf0075b3e063
font_01_sfnt_off0000d82e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD82E 9764 bytes
SHA-256: e55c1100be3ece4ad43633324989d5c36d6667726922df6d78f1dc5716cab3a9