Malicious PDF — malware analysis report

Static analysis result for SHA-256 88e29eda983da754…

MALICIOUS

PDF

77.0 KB Created: 2021-03-20 04:08:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 00fdbf7f7071df4a7b35fd36bfe37828 SHA-1: 144e5bf48b409cc9366fe89fa8d5f2432713d9d8 SHA-256: 88e29eda983da754c66ef7a917a5eb7944c598f8055959c3a32709e30ac2362c
186 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

Heuristics 6

  • 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 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://fokemale.ru/award?keyword=bible+pdf+in+tamil PDF link annotation
    • https://cdn.sqhk.co/wafifovuwel/9Ticgep/2020_mastercraft_x26_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxogatuv/f0jdPhe/iceland_guided_hiking_tours.pdfIn PDF document text
    • http://widonatozeg.mypressonline.com/how_to_bake_in_my_black_and_decker_toaster_oven.pdfIn PDF document text
    • https://waperimawomexav.weebly.com/uploads/1/3/4/7/134733778/jason-metigemelu-jamageb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421970/normal_603ccdc158f05.pdfIn PDF document text
    • https://cdn.sqhk.co/tejosepu/OY0iejf/rezizapum.pdfIn PDF document text
    • https://cdn.sqhk.co/verikiweneza/ihibgjs/huawei_health_apk_for_ios.pdfIn PDF document text
    • http://ladekepevij.mygamesonline.org/jevivozuvalesakelotezewe.pdfIn PDF document text
    • https://cdn.sqhk.co/zavilisuga/H4HZkhe/dizisebasagifulepomitabiz.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/oheIhh4/harness_racing_victoria_race_results.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421472/normal_5fcf81513e3fd.pdfIn PDF document text
    • https://cdn.sqhk.co/zamepeja/fgeQYRt/vetanovosidal.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/akjaijd/amnesia_memories_shin_endings.pdfIn PDF document text
    • https://sakedupepig.weebly.com/uploads/1/3/4/3/134355988/lesabotugalidogase.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/hdY4k23/75836943085.pdfIn PDF document text
    • https://lexikusu.weebly.com/uploads/1/3/1/4/131438729/e2a68be353a14.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://najaxobefirag.epizy.com/119720536.pdfIn PDF document text
    • http://lolurisufetofel.epizy.com/king_size_platform_bed_frame.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/rhyming_words_dictionary_free_download.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_off0000efa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA9 5100 bytes
SHA-256: 7d13437333d73dbc234ec9ed0ac9411f74ef744c1c196620eb5fd7375e46a3c8
font_01_sfnt_off000100f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F3 11220 bytes
SHA-256: 4237acb766c560c5f419696e2fcf45f58a1bbaeea5821d3d9a79f4f664e7aa1a

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