Malicious PDF — malware analysis report

Static analysis result for SHA-256 1470f2bc8b520473…

MALICIOUS

PDF

69.9 KB Created: 2021-06-07 07:50:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 434f0b7b4a0d1b63667f2ce81eaf8ab2 SHA-1: d7d518bf2c61cd631e03f77de9ee1b345f2db0db SHA-256: 1470f2bc8b52047354895cf1c60d22c406d243c28c4d1942ef22d6f84a4a6a93
186 Risk Score

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 0.9996

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://ketchas.ru/pbw?utm_term=download+insya+allah+sah+full+movie+hd PDF link annotation
    • https://pilinosaw.weebly.com/uploads/1/3/4/8/134852056/xiwavosu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471481/normal_6011abe3ae73e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369316/normal_5fd060f5f2bfa.pdfIn PDF document text
    • https://natadafupekex.weebly.com/uploads/1/3/1/8/131856288/vomufenabulibowi.pdfIn PDF document text
    • https://rofajubufilotol.weebly.com/uploads/1/3/1/3/131384128/duwadiku-puwim-naduluzoxaram-zuvagedira.pdfIn PDF document text
    • https://bobujiwa.weebly.com/uploads/1/3/1/0/131070874/ripejixemojekojureli.pdfIn PDF document text
    • https://zixavuxo.weebly.com/uploads/1/3/1/3/131398386/rolaruzizala-mepime.pdfIn PDF document text
    • https://tubuwixufadone.weebly.com/uploads/1/3/5/3/135315283/9e16300be61b173.pdfIn PDF document text
    • https://lukidamovepuk.weebly.com/uploads/1/3/1/4/131437538/5343449.pdfIn PDF document text
    • https://zunotebizi.weebly.com/uploads/1/3/4/6/134648513/xugovogelak_wikenujikabezo_virevikof.pdfIn PDF document text
    • https://jozeturibunoza.weebly.com/uploads/1/3/4/4/134491641/6814125.pdfIn PDF document text
    • https://zugasunisozabij.weebly.com/uploads/1/3/4/7/134759734/4805706.pdfIn PDF document text
    • https://kerijifulonuf.weebly.com/uploads/1/3/5/3/135328136/magusobikegifojozede.pdfIn PDF document text
    • https://zuvimigiga.weebly.com/uploads/1/3/4/5/134586735/gosedud.pdfIn PDF document text
    • https://wefenofutote.weebly.com/uploads/1/3/4/8/134873272/7779e71.pdfIn PDF document text
    • https://varavedonenen.weebly.com/uploads/1/3/4/3/134316352/dejozisaja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://juvupumanut.pbworks.com/f/zegutovelenekagotixidojod.pdfIn PDF document text
    • http://minuwaxiper.pbworks.com/w/file/fetch/144522201/powelab.pdfIn PDF document text
    • http://xobapotowi.pbworks.com/w/file/fetch/144558669/wulobemixajadegikufa.pdfIn PDF document text
    • http://sajutom.pbworks.com/w/file/fetch/144712173/vabimodow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2c84685-a4e4-4893-b87b-8d9ebf456874/10005524833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa26f256-1f42-4146-9623-870e925cc1c5/dnd_5e_critical_hit_enemy.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_off0000d302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD302 5304 bytes
SHA-256: 227da91e490f6e73b18859e569d7a460ba3b52d1339276147e7697a4728fe65a
font_01_sfnt_off0000e513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE513 10400 bytes
SHA-256: ee193aff6e0f520075361af6c91ecc01e023425be8bdbb5746e8bacb712be4dd