Malicious PDF — malware analysis report

Static analysis result for SHA-256 13aee31512a284f6…

MALICIOUS

PDF

69.3 KB Created: 2020-12-21 10:09:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 57f1e0d502af9ad9a12b5e9d37159cf9 SHA-1: bacd0ffaac62af69ccf2bcab108e78892e72659e SHA-256: 13aee31512a284f632f4b6057b790d7311390498291f385bcecbc1414483fd4f
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 0.9998

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=if+i+stay+adam PDF link annotation
    • https://manapefowuv.weebly.com/uploads/1/3/4/6/134605974/6923827.pdfIn PDF document text
    • https://sinegaxoxu.weebly.com/uploads/1/3/4/4/134462527/vuzawog.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/lesepapusojifax/99372314772.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2d504084698658e6ae702/t/5fc94d0c3852d0621f2bffe3/1607027981264/video_player_apk_download_for_mi_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/38141392809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3b2ded5-645f-42d3-ac8b-45456b17d436/zukexewix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c8edc4f-2de5-4272-9092-2532fe15b1d9/2088670885.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/free_aws-_solution-_architect-_associate_braindumps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbd053a2-bc82-4599-91e1-55fcfffcc8af/a_man_who_was_almost_a_man_theme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cb5c106-7cb4-404a-b9dc-af5cc5d7bba9/73897654213.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7227a330-3324-495c-9793-ce04cb77f0b4/55338098224.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59c9d78f-806d-433b-8e71-71ab4a7a167e/yosuke_hanamura_icon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf7bdb23-6981-43fd-a1e7-11796adf601d/53149143573.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/batman_logo_vector_template.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/91239856795.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 6

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_off0000d139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD139 4964 bytes
SHA-256: b9d9ed08969e7c2e484d027b2791a9615be57439f3777aae77efefbde2fc0aa5
font_01_sfnt_off0000e21e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21E 11412 bytes
SHA-256: a13ba4460a584e8b233be4d6ccf62e874b302e2e29954f6a43a9392321e5e4e8

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