Malicious PDF — malware analysis report

Static analysis result for SHA-256 c895d7c630e120eb…

MALICIOUS

PDF

65.3 KB Created: 2020-12-24 01:11:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 00e873c4c81f6f41ed663f56a682c1e4 SHA-1: 1467bab15708f90ff087f2ceb0ec39a6f3c232cf SHA-256: c895d7c630e120eb9a801eef9a79cb07579dc0e3667199ee7212993a998431b1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

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://traffine.ru/strik?utm_term=walkthrough+pk+xd+tips+and+tricks PDF link annotation
    • https://radisowe.weebly.com/uploads/1/3/4/3/134366404/225270.pdfIn PDF document text
    • https://bivapere.weebly.com/uploads/1/3/4/6/134689139/9326d.pdfIn PDF document text
    • https://cdn.sqhk.co/padekopa/6hihg6W/my_talking_pet_pro_cracked.pdfIn PDF document text
    • https://majubatu.weebly.com/uploads/1/3/4/2/134265851/2e297f9f67d2f4.pdfIn PDF document text
    • https://zukigepuzena.weebly.com/uploads/1/3/4/5/134593101/nixulebeve-dimovu-dodogefazifi-nifonerutawu.pdfIn PDF document text
    • https://suzipokenefuju.weebly.com/uploads/1/3/3/9/133997801/5475680.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/2900375e-d895-469f-a8db-f752e7594143/39011140563.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/empi_electrode_placement_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1388b741-7c66-4b0d-833c-c3e004459b04/que_es_la_teoria_humanista_del_aprendizaje.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/indian_flag_image_video.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/the_impossible_quiz_2_answers_23.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e88d766-bc6b-4b2f-aad4-8db556521d7e/gitisoretegib.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6A4 5480 bytes
SHA-256: d3ac2712c3eecd9efc7fbd7eeb71d8d7284f1e6f0ea0f32fa2f27c045213ea08
font_01_sfnt_off0000c94d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC94D 2232 bytes
SHA-256: ea27485f956db488e430a93c9bd048040934c9f8f5156bec74bcdb04785c5ed4
font_02_sfnt_off0000d376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD376 10132 bytes
SHA-256: 46d8cea246daf94d34fe44fd94c2fa92fc16a75e717f7698638dc092cfa6af39

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