Malicious PDF — malware analysis report

Static analysis result for SHA-256 72ebc56164968b99…

MALICIOUS

PDF

72.0 KB Created: 2020-11-28 12:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dc75f1ef418e5727c0c7d66bfe528f48 SHA-1: 9803bf5f9d90fac6bb1aec9c737b8fb75b23a73a SHA-256: 72ebc56164968b994026a2fcd2f1f5b5693a9a027a7c05c47add45929d052ff0
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://traffnew.ru/123?utm_term=where+is+area+code+623 PDF link annotation
    • https://reforolirif.weebly.com/uploads/1/3/4/8/134885236/lamofelezuf_tawudufivu.pdfIn PDF document text
    • https://wunabigoji.weebly.com/uploads/1/3/4/8/134891590/nusaxizewesu-gupifipoz-vipagirok.pdfIn PDF document text
    • https://xefepalig.weebly.com/uploads/1/3/4/6/134679085/9883272.pdfIn PDF document text
    • https://nebegixemavo.weebly.com/uploads/1/3/4/3/134359619/ratametebupe.pdfIn PDF document text
    • https://vadulovoke.weebly.com/uploads/1/3/4/3/134338980/pipofufij.pdfIn PDF document text
    • https://nogomikosisodop.weebly.com/uploads/1/3/2/6/132681488/deviwokenel.pdfIn PDF document text
    • https://xawupaxov.weebly.com/uploads/1/3/4/6/134699297/nimodajidudekopoleni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372371/normal_5fa06f61aa4b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466680/normal_5fb5b26284d9f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wazotojemov/tratamiento_de_la_alopecia_en_mujeres.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/35316081970.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/cyanogenmod_installer_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/50233008472.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/lowubesonukesamidijebi.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F1 5060 bytes
SHA-256: 8e3efd20e7ff20cab1ea33b3d62d629b386d2a5b04582057260e6e7d3a5edb26
font_01_sfnt_off0000e235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE235 10268 bytes
SHA-256: 27e052450dd853662b5cee990cb77c4b1cc3af84b6f622c730751d432857c3df
font_02_sfnt_off00010523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10523 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.