Malicious PDF — malware analysis report

Static analysis result for SHA-256 9668a78870c0ecce…

MALICIOUS

PDF

68.5 KB Created: 2020-12-19 00:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 8ac0af1c947d1a453b1b5bd6bf742514 SHA-1: d304da8633a75e314b0d742aabf761c4bfc32b17 SHA-256: 9668a78870c0eccec759759a176b8afe2f4f321aa1411ec9942cdd2a098ea5bd
244 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier, indicating it likely serves as a phishing lure or a link farm. The presence of numerous embedded links, including one pointing to a known malicious redirector (traffine.ru), strongly suggests an attempt to direct users to malicious websites. The document body is heavily obfuscated and unreadable, providing no further context on its specific intent beyond the link farm behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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/aws?utm_term=angolan+kizomba+music In PDF document text
    • https://bulumivivowusip.weebly.com/uploads/1/3/4/6/134667270/sivavesonaxabid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385038/normal_5fadff03125ef.pdfIn PDF document text
    • https://kolivobaka.weebly.com/uploads/1/3/4/5/134500933/9792016.pdfIn PDF document text
    • https://xujuwole.weebly.com/uploads/1/3/4/3/134378666/badakowuko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413976/normal_5fbb621249680.pdfIn PDF document text
    • https://fiximumar.weebly.com/uploads/1/3/4/3/134345920/xudezuxuz_janeniz_pumibakaxab.pdfIn PDF document text
    • https://robivitoj.weebly.com/uploads/1/3/4/3/134334713/rejadexunuvi-miwafaruge.pdfIn PDF document text
    • https://rumorima.weebly.com/uploads/1/3/4/3/134307849/e236e253d2634.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/liwafo/adjectif_qualificatif_ce2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc310f192c50b1a1e85a8f0/t/5fc88e14ee804a17a1d4be4c/1606979093905/bbc_radio_1_uk_top_40_rock_singles.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d8fc0b6b03258f35503a/t/5fc13621f8cdb769c60f5af1/1606497826062/ar15_trigger_guard_free_shipping.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/12396764454.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_off0000c5d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D1 5264 bytes
SHA-256: e1741bb8c715ceb38a895cb886e436fe92fb424f227d647a13525ddca78a00e2
font_01_sfnt_off0000d7b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B3 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000e041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE041 11088 bytes
SHA-256: 12e9aff794d76dbc42dee61f9831198d90487256628b7f6f0b1f2cd7ab3aef8d

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