Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f0c0ce767993e2…

MALICIOUS

PDF

84.8 KB Created: 2021-03-27 22:33:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 77b2da00459748f1b040d926fe0c63fa SHA-1: 20ba7edd2153b39f2f6db4fc5c53be94fb49e00d SHA-256: 60f0c0ce767993e2a7f6cfc7be51732692f43dcf3e98fcb2bf5b3301a52b4b00
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://lozipotod.ru/wix?keyword=black+and+decker+grass+hog+xp PDF link annotation
    • http://sevezor.scienceontheweb.net/jovimosubexudedixawo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466675/normal_6006d4448803f.pdfIn PDF document text
    • http://begetus11ppz.xyz/tiger_scout_handbook7rr27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491175/normal_602de16f223ce.pdfIn PDF document text
    • http://karaulovlife.site/briggs_and_stratton_450e_owners_manuale2cqu.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/under_the_canopy_lyrics.pdfIn PDF document text
    • https://jivefumo.weebly.com/uploads/1/3/0/7/130776755/e065437e.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/3Wic7wD/14026529171.pdfIn PDF document text
    • https://zesijedoroge.weebly.com/uploads/1/3/4/3/134372038/juridapuwofurovuw.pdfIn PDF document text
    • https://tenomexob.weebly.com/uploads/1/3/1/1/131163969/rixidabuzitax_batofalagedug_zikikosi_fenel.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/dupapidakomelax.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/risup.pdfIn PDF document text
    • http://trysoda.pro/zen_meditation_music_freek5ajp.pdfIn PDF document text
    • http://itayoga.space/upsc_civil_services_exam_syllabus7tpw5.pdfIn PDF document text
    • http://vizojuzoninunoz.scienceontheweb.net/xiboxowovuwoludujafop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444882/normal_5ff992ba6409a.pdfIn PDF document text
    • https://cdn.sqhk.co/wesaduleb/vgi0jgC/rovozujewudosemetew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001000b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000B 5176 bytes
SHA-256: ff4d9e64c77c51339a9c9d587317d1a2d3477fccc485f6f685d9b5a45b905436
font_01_sfnt_off0001118c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1118C 10740 bytes
SHA-256: 03bfaa920e4d6753b81aebc7304c7ebdd356c6b6a665ab19d1211b1cae2fd5c5
font_02_sfnt_off0001361b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1361B 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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