Malicious PDF — malware analysis report

Static analysis result for SHA-256 c442b8b9b1d9935b…

MALICIOUS

PDF

67.3 KB Created: 2021-02-22 02:04:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 1dce7f8920e5d79a3e664913a1f9ef73 SHA-1: fbca7980876aea5377669abc6d79e38a317b4996 SHA-256: c442b8b9b1d9935bebe5e97a7e93e2a6a9f625bdb7007c23e577b4060c7eab2f
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/wix?keyword=betty+crocker+hershey+brownie+mix+recipe In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426679/normal_600ebb6766e17.pdfIn PDF document text
    • https://sofifego.weebly.com/uploads/1/3/4/8/134899758/dagolurix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403681/normal_5ff8d503aeb6c.pdfIn PDF document text
    • https://zerasogamonan.weebly.com/uploads/1/3/0/7/130775055/2049303.pdfIn PDF document text
    • https://tovamegudisolos.weebly.com/uploads/1/3/1/4/131411857/latetibubuwujik.pdfIn PDF document text
    • https://revunisukigi.weebly.com/uploads/1/3/4/8/134849871/1316700.pdfIn PDF document text
    • http://yourdesk.website/make_ice_cream_cake_pops147e0.pdfIn PDF document text
    • https://pamigewome.weebly.com/uploads/1/3/4/6/134631685/kamuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490961/normal_6010e5c3883c9.pdfIn PDF document text
    • http://50offshop.info/rival_700_watt_microwave_replacement_partsxpbmk.pdfIn PDF document text
    • http://tesocoin.online/5707762077090cnm.pdfIn PDF document text
    • https://cdn.sqhk.co/gubisagebuto/04je4gh/jituzufanesikavosos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373998/normal_6000b228569c6.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/low_oxalate_dietox24z.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/hh5Xjew/6328072742.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xadatadute.epizy.com/notarazazifexilugufemuxul.pdfIn PDF document text
    • http://wegolas.epizy.com/59550334858.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/poruzenofefazopitagixo.pdfIn PDF document text
    • http://baxiziroj.epizy.com/sutepiwebufixinulurow.pdfIn PDF document text
    • http://winulesodix.rf.gd/59334456546.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC845 5444 bytes
SHA-256: 4918eef7081b5104c7eccae2b935614d279c5d062fd9d982b351bc92502b69fd
font_01_sfnt_off0000dac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC1 10952 bytes
SHA-256: eb5c5f1d17bbd8de495eca3b67059774df2e51c3c8ba157c793cdd29db6550e0

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