Malicious PDF — malware analysis report

Static analysis result for SHA-256 ded02dca492dbd4f…

MALICIOUS

PDF

83.4 KB Created: 2020-11-29 21:18:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ff47bdc0fba62e80f4402948b02606bf SHA-1: b7192b73f55d26aea6b59f656df2fe827f94b081 SHA-256: ded02dca492dbd4f38a3209bd8fce1843e8a15d9aa227dabe6b2661eb3da8154
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 0.9996

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://traffking.ru/123?utm_term=persona+super+live+2019+day+2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370066/normal_5f8c76c3b17f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f87658328ac3.pdfIn PDF document text
    • https://jaduxopedarev.weebly.com/uploads/1/3/4/7/134749363/bixarud_gejudijif_tekegedetaloxu.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/lopadivupudexa/68744224492.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/apk_mirror_kingoroot.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/kalexanumanadolalupola.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/layton_mystery_journey_switch_puzzle_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/algebra_1_common_core_textbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/91126725750.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c61a26f-2f8e-4b5f-9448-51e340150a58/patoletirilozizixe.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/wildwood_wisdom_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sezutuma/the_breaker_new_waves_manga_read.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/aleko_sliding_gate_opener_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/difepupamegoke.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4D 6664 bytes
SHA-256: d80de2a2cb96a48c8005610ec2e586468376f872dc6d42d1c775058f78f74118
font_01_sfnt_off0000f20f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20F 5600 bytes
SHA-256: ed19bdf9f85b029db3f66e7e5ceb474cefe0bd8e74837dba108a05c4d2a129b0
font_02_sfnt_off00010533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10533 11136 bytes
SHA-256: b16d1d103670bf2e1f7afadbd807c39741d3cd1d77d6b9923b5a4ff97babf51c
font_03_sfnt_off00012b33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B33 16068 bytes
SHA-256: 89247d3646e3773572243f1d4b0449240b5d7bcbc9865045ac28c7845acd9c8f

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