Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0a19f391912278…

MALICIOUS

PDF

81.5 KB Created: 2021-02-24 00:47:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 80004862e2f43cb3b4e79afa65828ffa SHA-1: 8bb89236baa0f5e449e9977c392a2b52157eddef SHA-256: 0d0a19f3919122785728e963a05b7019be4f8a01bc10e0c3deb83a915c8e17bd
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-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://maypoin.ru/strik?utm_term=poulenc+trio+for+oboe+bassoon+and+piano+movement+2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365582/normal_60049cfd16e39.pdfIn PDF document text
    • https://pojekemo.weebly.com/uploads/1/3/4/4/134469054/lujiporefojof-dizerakujixuz-nuzakixuvuf-siputapub.pdfIn PDF document text
    • http://rekusigixebisuk.22web.org/47280875216.pdfIn PDF document text
    • http://sudesisobibimit.22web.org/14355453333.pdfIn PDF document text
    • http://kuxalowakanuxed.iblogger.org/42566134593.pdfIn PDF document text
    • http://dazedovepiza.iblogger.org/ff14_ifrit_zenit_guide.pdfIn PDF document text
    • https://fumabufoduf.weebly.com/uploads/1/3/5/3/135313851/wenep_linajekepalamo_lejiler.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_60357eb19ba64.pdfIn PDF document text
    • http://debasowajedo.22web.org/65626330772.pdfIn PDF document text
    • https://gepavemu.weebly.com/uploads/1/3/4/8/134861499/9702214.pdfIn PDF document text
    • https://nutipofuvi.weebly.com/uploads/1/3/5/3/135310868/pobikilavika.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382620/normal_5fc658b9013f6.pdfIn PDF document text
    • https://makifilibavik.weebly.com/uploads/1/3/5/3/135383918/dugefiz_witukod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413850/normal_6025a4d7e3263.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://legopabez.rf.gd/acute_appendicitis_pathophysiology.pdfIn PDF document text
    • http://jejuton.rf.gd/21354037771.pdfIn PDF document text
    • http://sipikoz.epizy.com/afk_arena_mod_apk_1._24.pdfIn PDF document text
    • http://zumoriko.epizy.com/mechanical_engineering_project_report_example.pdfIn PDF document text
    • http://tudemofexurujen.epizy.com/cdphp_child_health_plus_income_guidelines.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F2 5636 bytes
SHA-256: fc01f9e815a6c0b44d864de6ca4667457e64dcad5afcd25e8fe6237358553785
font_01_sfnt_off0000fb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0A 13324 bytes
SHA-256: 8ff04cdeeaee41a36ab32ee55e1b038e2097d75e30c60650826b1705c6c46ec6
font_02_sfnt_off00012345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12345 16100 bytes
SHA-256: b59afbb2f683942213df284fd86cd9422ada0c5f1ffac7698db8c94a40390bc4

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