Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5070c9c7bb484ef…

MALICIOUS

PDF

91.9 KB Created: 2020-12-28 05:51:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76e79cc8b373ba72d3aa47d5b58b4f2e SHA-1: ef2328d0771a2ab0bf37c42fd1d5503f0ec66080 SHA-256: e5070c9c7bb484eff52cc533a2001fe206cb0ca37dea78864c52e330f3fba414
244 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to numerous external websites, including a known malicious redirector. The document's content and structure strongly suggest a phishing or scam attempt, aiming to drive traffic to potentially harmful sites. The presence of multiple links on disposable hosting and the use of a redirector indicate a deliberate effort to obscure the final malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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 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://ggtraff.ru/aws?utm_term=census+2011+kerala+pdf
    • https://toziraza.weebly.com/uploads/1/3/4/5/134506396/jaxasizenidaf-nalutakevovuz-xaribiza.pdf
    • https://liwavijej.weebly.com/uploads/1/3/4/3/134379327/jutuzosas.pdf
    • https://zikixitifo.weebly.com/uploads/1/3/4/8/134897390/figonezopikimovarebo.pdf
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/metor.pdf
    • https://vovikadu.weebly.com/uploads/1/3/4/5/134587732/legivorewo_lobez_mibes_gusokaw.pdf
    • https://lutoropekitixes.weebly.com/uploads/1/3/1/3/131384777/gapulefoguzalikobuge.pdf
    • https://cdn-cms.f-static.net/uploads/4401525/normal_5f95ff1e1e968.pdf
    • https://cdn-cms.f-static.net/uploads/4444386/normal_5fb2a8c300296.pdf
    • https://pugujexavifik.weebly.com/uploads/1/3/4/7/134702512/2124579.pdf
    • https://cdn-cms.f-static.net/uploads/4462982/normal_5fb7d9b01d159.pdf
    • https://bumesusibob.weebly.com/uploads/1/3/1/8/131857970/fumama-nojon-lumejetuxajoxuv.pdf
    • https://xiwujanif.weebly.com/uploads/1/3/4/7/134705994/5109574.pdf
    • https://kojovade.weebly.com/uploads/1/3/4/6/134681743/mixakixelaferamizin.pdf
    • https://static.s123-cdn-static.com/uploads/4371497/normal_5fca9f7280ece.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/b163f724-ae4e-4b93-a48f-ab9dbf73ae28/99158118906.pdf
    • https://uploads.strikinglycdn.com/files/c4fb9678-906e-438a-b847-ed42c31f93f7/31853277009.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d11.bin
733d8e0a59e8daad9a609b48643c193492b59b61fb4bbb5a6bdc1feafde3aaf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D11 5092 bytes
font_01_sfnt_off00012e6d.bin
c3f89966bdaed8d9af5c47640c54741853231867ebcb854c970ebe4f7674a29e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E6D 11124 bytes
font_02_sfnt_off0001544d.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1544D 4324 bytes

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