Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2465d365840f051…

MALICIOUS

PDF

78.8 KB Created: 2021-03-07 00:02:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 709ed712f2ec8512b5520055a37a6f09 SHA-1: de2407319deacdd79cfa412b8ca4c00682c3a193 SHA-256: d2465d365840f0516c0d6374453c0ab27b7eb0b598dc300a3cccb58887cf1b6d
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially harmful content. The presence of an embedded URL and the heuristic 'PDF_SEO_LINK_FARM' indicate that the document's primary purpose is to drive traffic to external sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://jacksth.ru/strik?utm_term=craftsman+10+inch+table+saw+model+113+price PDF link annotation
    • http://fetesitomer.mygamesonline.org/how_to_use_igora_color_10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371248/normal_5fc78f4b5c4f3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448540/normal_60097b2a44814.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479932/normal_6011aefb4b347.pdfIn PDF document text
    • http://xuzobinemipivor.mygamesonline.org/58311383563.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489061/normal_5ff4a078435c9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/724c1858-0dcc-4913-aa98-df4ca3392f68/foxafina.pdfIn PDF document text
    • https://4b5f4e46-8b81-4257-bf39-61fc08ba57b0.filesusr.com/ugd/7ea8bb_d6fce11f372048518d121f5e023584d7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6bb68aa-d8da-46f7-9f93-6aa286f62e41/jenunusojuwakegifunifi.pdfIn PDF document text
    • https://3437305d-a3f4-4f94-9a63-846dd410f5be.filesusr.com/ugd/ffe76b_e9f39a81b0fb4707828b07b675a1b3b9.pdf?index=trueIn PDF document text
    • https://8dac4d01-2cd1-45d2-8b5f-6005f802adc9.filesusr.com/ugd/1f96ce_85efac5533e34e939b3759dee728fca2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b59ffc6-c87c-417e-981c-d85353dd3a2d/jugebo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a017f92c-f82d-4ec7-b434-6fc095adcca9/66812430709.pdfIn PDF document text
    • https://c7fb3737-a2fb-4e06-b71d-f78b648bb0a4.filesusr.com/ugd/a9248e_d3b13042456545029a7a1f882d9f2097.pdf?index=trueIn PDF document text
    • https://f13dd0f9-fe0a-4257-a88d-d9af1a1cf0e3.filesusr.com/ugd/d954c5_54c2299630324b7688d7567391a261d7.pdf?index=trueIn PDF document text
    • https://a2c67b61-a01d-4053-b7ad-f1487bca8054.filesusr.com/ugd/24853a_cf5d59ca65ab4dda9aebabbab2e9c43b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/69195b20-5846-49e5-a601-b277d3967b85/643576603.pdfIn PDF document text
    • https://8f20b4bd-83f7-4a55-8c6f-e9501e2e061c.filesusr.com/ugd/c1c462_37f47078bf644efb982c639b5c7eb3e6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c29c2256-a64a-49d6-9e69-fc25478bf5fe/que_compuesto_es_el_cianuro_de_hidrgeno.pdfIn PDF document text
    • https://1fc3e790-19e1-43b7-bae7-d09a953f51fe.filesusr.com/ugd/2c608b_a97fbcdb60254145a83335bf452a95e3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a7f2855-0ef1-465a-9dc7-b54bb3611d92/simon_lord_of_the_flies_character_description.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f37c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37C 5892 bytes
SHA-256: 57bcd4abdd107622ceb16a6602672360713913062d5d8f7319881537eae58c76
font_01_sfnt_off00010766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10766 11104 bytes
SHA-256: acd959ce8c7611f5b36077dea1d3e5ea29263053514809381cd1bb33557a154b

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