Malicious PDF — malware analysis report

Static analysis result for SHA-256 58649d6dd780e8e0…

MALICIOUS

PDF

45.5 KB Created: 2020-11-09 02:36:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e60dd51223f19d12fb47d2d0ad6f340c SHA-1: d20e420d765c8ecd711c53ed67cfa41bd132d5a2 SHA-256: 58649d6dd780e8e001c60aa61f4147dcfd9bfc42ab9577c9675ac60b29e46b45
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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 1.0000

Heuristics 5

  • 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://traffnew.ru/123?keyword=table+tennis+world+tour+game+unblocked PDF link annotation
    • https://balijuwil.weebly.com/uploads/1/3/4/4/134403438/jakijoko.pdfIn PDF document text
    • https://setumimirakav.weebly.com/uploads/1/3/2/6/132681532/wonexok-koxafalozimasu-dojiregoluloti-sozadufoselof.pdfIn PDF document text
    • https://pesajupamobe.weebly.com/uploads/1/3/1/6/131607203/bupiretefonudijak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://vivader.files.wordpress.com/2020/11/nuzoge.pdfIn PDF document text
    • https://raxusurer.files.wordpress.com/2020/11/god_of_war_hacksilver.pdfIn PDF document text
    • https://jaxuxakom.files.wordpress.com/2020/11/pvifa_on_financial_calculator.pdfIn PDF document text
    • https://sifetafax.files.wordpress.com/2020/11/mudunud.pdfIn PDF document text
    • https://vuxuwavu.files.wordpress.com/2020/11/graphic_novels_ielts_reading_answers.pdfIn PDF document text
    • https://nugokun704377897.files.wordpress.com/2020/11/mogeseraxo.pdfIn PDF document text
    • https://sukikafijoko.files.wordpress.com/2020/11/xotikaromugofod.pdfIn PDF document text
    • https://wepigun.files.wordpress.com/2020/11/78627158457.pdfIn PDF document text
    • https://vupejiw.files.wordpress.com/2020/11/cfop_method_algorithms.pdfIn PDF document text
    • https://kebupud.files.wordpress.com/2020/11/16674380217.pdfIn PDF document text
    • https://zujuvigewif.files.wordpress.com/2020/11/fuvafapagoruwipamosezuga.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_off00006202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6202 3948 bytes
SHA-256: 5a5f7bb3012396a6921e5a27536cbec7c19358b55681c44bc18ebefe22b3c4f8
font_01_sfnt_off00007000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7000 5504 bytes
SHA-256: 5c06778e4e60505ef248862bf37034d1fca4de5177652c2671778755fcb1eb7f
font_02_sfnt_off000082b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B1 11224 bytes
SHA-256: 34b2e6bf67d3417fc2a96c621d6b142091277f2cf033c10521a3073e2a99973e

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