Malicious PDF — malware analysis report

Static analysis result for SHA-256 62cad0c71068f86b…

MALICIOUS

PDF

159.8 KB Created: 2021-03-15 05:29:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3e75440cf8a8df712f4e54ef4ba47d3d SHA-1: dc3337db77bddb69b744d50596ac4a8d4f6c7112 SHA-256: 62cad0c71068f86bd2defceda39208cb2359aa14b64912a281b9783a81028510
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9988

Heuristics 5

  • 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.
  • 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://zajinet.ru/wix?keyword=guardian+angel+ambulance+homestead+pa PDF link annotation
    • https://munejubulogulep.weebly.com/uploads/1/3/4/2/134266186/d145932af.pdfIn PDF document text
    • http://tiwilofojifig.sportsontheweb.net/gefelodusobuda.pdfIn PDF document text
    • https://danifiwap.weebly.com/uploads/1/3/4/5/134585556/pazado_zumelepimivik_gaxez_nobubusaw.pdfIn PDF document text
    • http://pobesegu.scienceontheweb.net/mojurimukusorevu.pdfIn PDF document text
    • https://patodenum.weebly.com/uploads/1/3/4/6/134657208/fejazetivul.pdfIn PDF document text
    • https://sazoxizifa.weebly.com/uploads/1/3/4/5/134505384/2381756.pdfIn PDF document text
    • https://rirosivipoxutu.weebly.com/uploads/1/3/2/3/132302830/winalogoge.pdfIn PDF document text
    • https://mulomaninivoxom.weebly.com/uploads/1/3/1/4/131437045/7a5a3.pdfIn PDF document text
    • https://liwuvena.weebly.com/uploads/1/3/1/3/131398027/6596401.pdfIn PDF document text
    • https://zeduxuvanoripi.weebly.com/uploads/1/3/0/7/130775880/mipidegatadu-sameto-gemabelugad.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/f50ba109-d2d3-49ee-b7b7-bddf8c51d42a/dark_souls_bosses_rated.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64e1519e-4a31-45f7-9c3c-27bb595294d2/603718054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02526eae-02aa-4723-8c4d-37bb7a4b8cca/toropativi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6067382-6837-4ca6-9cb5-666f26617fdd/71059731947.pdfIn PDF document text
    • http://zorikeroz.onlinewebshop.net/85966310090.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/pazapivuzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33ee3df7-72a1-4ed1-bfaa-9114ac51bf47/52999870995.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7830e56-d793-4710-8408-bb65728cc40c/87986380326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22d32811-b355-427a-bd47-69de86b2c975/60962516043.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/kuwetijuvavezotedev.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/99461195003.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/rutuzegitaxakudefixig.pdfIn PDF document text
    • http://pudosuvosav.atwebpages.com/how_to_setup_garmin_delta_xc.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_off0002363b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2363B 5656 bytes
SHA-256: 08a634414ba444f5301ad0912fac2734037511ed4c1d0f0a4be5eceb3cd8ed11
font_01_sfnt_off00024946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24946 11524 bytes
SHA-256: 622f22afcc7373c9d50b8f7129538e163e200f548c855cef2a046613258d2950

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