Malicious PDF — malware analysis report

Static analysis result for SHA-256 c472dcc130c1ccca…

MALICIOUS

PDF

70.0 KB Created: 2021-03-20 17:24:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 76796e347f2162f5b2271728c0f43746 SHA-1: 0c8be5bb11c9ea8d73eb8d7627a583b57f2b0ccd SHA-256: c472dcc130c1cccad18c60cc05452a48b298c9d3063ba3ef84a96aa13afb6e18
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/wix?keyword=the+crucible+vocabulary+crossword+puzzle+answers PDF link annotation
    • https://taretowixulu.weebly.com/uploads/1/3/1/0/131070971/fetepugovagu.pdfIn PDF document text
    • https://wusatotaluvak.weebly.com/uploads/1/3/4/4/134469206/dakotekowif.pdfIn PDF document text
    • https://gosawopidelogeb.weebly.com/uploads/1/3/4/7/134714887/d143d237681997f.pdfIn PDF document text
    • http://febemavakikago.iblogger.org/wusogasorefokovolajon.pdfIn PDF document text
    • https://lezotaxodad.weebly.com/uploads/1/3/4/4/134432483/nozewazefanik-tebuwomak.pdfIn PDF document text
    • https://dawoxojukuput.weebly.com/uploads/1/3/4/8/134890950/8e36612a9105b1.pdfIn PDF document text
    • https://jazelisis.weebly.com/uploads/1/3/4/8/134870131/91936a.pdfIn PDF document text
    • http://juzawav.iblogger.org/tazilatabadade.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://desiwafinu.epizy.com/49203637874.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d50d8b5-313f-4c3c-80d5-f91730ec532c/98063754428.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/755eff08-1b4e-4c51-bc74-3b008956f881/panda_express_allergen_menu_2021.pdfIn PDF document text
    • http://pagiburisodu.epizy.com/4104378625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0676e5e-0fff-4bed-8470-5d4c5cbd5e62/kemutapinugiriwakuxojadat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40bd892c-15b0-481a-9203-010c473cf227/baxuvivog.pdfIn PDF document text
    • http://lotawom.rf.gd/35935853388.pdfIn PDF document text
    • http://bixojal.rf.gd/nccn_gastric_cancer_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fb4e211-bd2f-4ba9-bf00-e3ea8d30deeb/asus_x205t_bios_setup.pdfIn PDF document text
    • http://vibiwarufade.rf.gd/nomiwelapikewoduse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e6e8341-7b18-4772-8f6c-0535eb1f5fca/iiba_babok_v3_download_free.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_off0000d2bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2BD 5552 bytes
SHA-256: 9932d9c1744946f2e70da24035d0b2ddf618d608235a10b1f9c4e1d9a1358fc8
font_01_sfnt_off0000e5b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B8 11216 bytes
SHA-256: a5c6f72dd5666abca5ea2625153ffe56734ed4dc1bbdd77da6adcf6bb37b4e43

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