Malicious PDF — malware analysis report

Static analysis result for SHA-256 8645f21ee16215f0…

MALICIOUS

PDF

84.4 KB Created: 2020-11-16 14:59:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f26bbcd5c11357f1aa5f765376dc4829 SHA-1: df540bbd499550b4da3a47bdefa64d8f49c3e684 SHA-256: 8645f21ee16215f00e6c3070dc2148e5150e25ac745529cf64cce466cff615c3
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafftec.ru/123?utm_term=chuck+klosterman+20+questions PDF link annotation
    • https://wozijasobinela.weebly.com/uploads/1/3/4/4/134445001/lizuxoxuk-tarakejokex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f8a0f08561dd.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/resegi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_5fa330604bd73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385633/normal_5f8cb78b39b8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393034/normal_5f97e95721d3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369508/normal_5fa6a4e41317b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jeworurowam/kodewogozorapolumuzexon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d3dac4a-3db2-494c-90ec-265285dea4de/linakokilimagatodavadome.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/aol_mail_sign_in_aol_mail_sign_in.pdfIn PDF document text
    • https://s3.amazonaws.com/xafuluxel/american_express_companion_ticket_2019.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED13 5408 bytes
SHA-256: 06e943a1bbc096e5f10b304b63f0596123be7adb3ed1e134fb3b8f0615e6f950
font_01_sfnt_off0000ff3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF3B 6524 bytes
SHA-256: 8f97abfc06477bdc6304d14e5c09e221ca893184622fd7e8ec56a3ff803de9db
font_02_sfnt_off000110a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110A2 10992 bytes
SHA-256: 1714d329516abd6d40d0e222e91a37996420c3a79121ba110a7136d382f1be8a
font_03_sfnt_off0001360c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1360C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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