Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc6e78d1a60984c…

MALICIOUS

PDF

74.2 KB Created: 2021-03-16 02:43:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5e3358cf37c96d9d235726c2e0da4312 SHA-1: 113199f7be750cc5703678d7e550f2f3b2477a6c SHA-256: 4cc6e78d1a60984c0137723c0567438eac39685bc3ac04322b54132787766239
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • 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://kuzutuzo.ru/wix?keyword=cheats+blood+and+gold+caribbean PDF link annotation
    • https://cdn.sqhk.co/rifarako/ibJ5haP/nebabibetetuverodokugib.pdfIn PDF document text
    • https://cdn.sqhk.co/zapevexuvot/f5Ngfjc/tibidete.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/gdwehar/14588639012.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369904/normal_6033c8f88d55f.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/ivwjdo7/nhl_pro_shop_near_me.pdfIn PDF document text
    • https://fadefewili.weebly.com/uploads/1/3/4/3/134316521/9cc45f0104.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380700/normal_60489e87c1354.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/qZwhagc/38524310164.pdfIn PDF document text
    • https://fivarebaxuru.weebly.com/uploads/1/3/5/3/135326201/1488485.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451756/normal_5fc885051f519.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mubefula/how_to_adjust_kitchenaid_mixer_professional_5_plus.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/colors_bangla_tv_serial_naagin.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/rofodufulekire.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/gukozisajadamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed06f673-d420-4881-96af-7068a6f9141c/kewalozujafugazopabodego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a242efc3-f282-4794-9c7d-02570a5d514b/how_long_should_a_panasonic_microwave_last.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/harris_bitcoin_miner_windows_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b7b89d3-4573-4def-bcaa-f5d56c294c83/sat_subject_test_biology_practice_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c15dce7-4196-4123-a788-249ce975a8c1/13486855216.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64f68d1a-ee96-4f92-ac01-b67a63079e24/norton_anthology_of_american_literature_beginnings_to_1865_shorter_ninth_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7a06479-6132-4aed-9012-c17c4eee1171/55857478717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbcf1418-4e8a-4acc-999e-d4876dd282ce/inverse_trig_functions_derivatives_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5faec889-3ee9-47c4-ba0c-bb870eccc4bc/vorifakosifod.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

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_off0000e457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE457 5248 bytes
SHA-256: 5cda656286d6305f1c9633848b2b4ab9ea957da3d1ada47646f10c672318910e
font_01_sfnt_off0000f61c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61C 11024 bytes
SHA-256: 706cf64d72798ecdfe18ec68b9f4ed09902c29a1cf103d8507cf92ca6ec1e414

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