Malicious PDF — malware analysis report

Static analysis result for SHA-256 094af06e85876197…

MALICIOUS

PDF

113.2 KB Created: 2021-02-04 06:00:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 38d42938cb4cdbd131f7bb54bd28cf87 SHA-1: 24799c9b8862ad20bc7cfb8f0577bff3f57f432f SHA-256: 094af06e858761975b1979ab8039e0391791d78a938c155ff80466ecf9a39713
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to disposable domains and link farms, indicating a likely SEO manipulation or content distribution scheme. ClamAV and ML classifiers also flagged this file as malicious. The presence of external URIs and a link farm suggests an attempt to redirect users to potentially harmful content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://seumenha.ru/aws?utm_term=2014+acura+mdx+navigation+system+manual PDF link annotation
    • https://cdn.sqhk.co/tiwefuxab/nSigid0/biwidogurufaxaliraxabal.pdfIn PDF document text
    • http://kiwirixup.22web.org/raxapajepa.pdfIn PDF document text
    • https://cdn.sqhk.co/vibupiwoxaro/fjhgeBU/suzamilufegitotonajuvew.pdfIn PDF document text
    • https://ruzunaxatan.weebly.com/uploads/1/3/4/3/134340268/sigejakafarumokukas.pdfIn PDF document text
    • http://kartaidatodemeleri.com/missile_command_atari_5200_romvwb7k.pdfIn PDF document text
    • http://goossyy.online/statistics_for_management_free_dztp1e.pdfIn PDF document text
    • https://cdn.sqhk.co/tajavujexiz/WilNhax/learn_to_code_free_offline_for_travel.pdfIn PDF document text
    • https://cdn.sqhk.co/sixojifez/QgjhThg/64521858977.pdfIn PDF document text
    • http://sizijevoji.iblogger.org/64080969933.pdfIn PDF document text
    • https://cdn.sqhk.co/gokovolasula/0Age3I6/fenabamopimutojejasudifiv.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/zagapaxa/cancun_14_day_weather_report.pdfIn PDF document text
    • http://xujijanuzovaziv.rf.gd/8451066283.pdfIn PDF document text
    • http://pibowaloboko.rf.gd/83575564932.pdfIn PDF document text
    • http://supidanerij.epizy.com/wetigul.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/jidomuxubuxufimulaxesob.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/35386191325.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_off00016e10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E10 3092 bytes
SHA-256: e29eb53924f1c87e85a50f336ee764baf871f77ef6f610cff8093a4b6ba285c5
font_01_sfnt_off00017921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17921 5808 bytes
SHA-256: 59f760e711413bcd3f336ce40aa162585bccea3c63f1e26dfca9c8369c28adb0
font_02_sfnt_off00018ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18CE4 12772 bytes
SHA-256: c5f70671bb73091964210e9dba60de27c503b6876a086b0d7ecf7e171552548b

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