Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ee62c2b6667bf0…

MALICIOUS

PDF

76.1 KB Created: 2021-04-07 00:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b27c04e1564e9af60946ce55b42ed35a SHA-1: 97c54d37dfae233fb6a617b9f20c8cf0a381534c SHA-256: 80ee62c2b6667bf0826b7d2852fc009937c2267e7688c033cd1ab4ec2143ab5e
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 0.9996

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://bologen.ru/wix?keyword=ace+awareness+week PDF link annotation
    • http://findssldz.xyz/the_black_prince_full_movie_in_punjabi_filmywap8ky0q.pdfIn PDF document text
    • http://segwaywheelchair.ru/my_zmodo_is_offlinejvpfx.pdfIn PDF document text
    • http://rodsfish.club/action_verbs_and_linking_verbs_worksheetlbay4.pdfIn PDF document text
    • http://fitit.space/bisareguwefakart8qbm.pdfIn PDF document text
    • http://nyvelsets.online/ketamewubedagadogiley5ryi.pdfIn PDF document text
    • http://redit.fun/496210230480mihd.pdfIn PDF document text
    • http://momsmall.space/batman_vs_superman_telugu_dubbed_movief0595.pdfIn PDF document text
    • http://50offshop.info/vovowegurosejewidozowemalvmqnp.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
    • https://c809e8a6-5bdf-489d-8d8c-df4e4638a115.filesusr.com/ugd/45a296_96c57b7352c940e09ce0565c71a076b6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2a5f077-2cde-4845-adfd-5983e0c37eab/wordpress_default_login_username_password.pdfIn PDF document text
    • https://1f571a09-6495-4108-bd1a-9715deae29b5.filesusr.com/ugd/b0bf26_b576ea24078a424cbd5ead768382fbe6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ead2380c-8f71-4b2b-9059-f91aa2b7f833/mubugasoxafogudi.pdfIn PDF document text
    • http://dofenepebasep.epizy.com/petafokerawifeko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/760e0bb8-4f20-484a-bf1d-120c28b252b8/ashrae_handbook_fundamentals_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/bingo_clarinet_sheet_music.pdfIn PDF document text
    • http://salekisaju.epizy.com/tizexovijerogixosawokadul.pdfIn PDF document text
    • http://weralawubuzeg.epizy.com/44383952594.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59e194ad-61a0-4755-9865-1d2a803b25b7/57634457407.pdfIn PDF document text
    • http://rivoteb.rf.gd/cancionero_mision_pais_2020.pdfIn PDF document text
    • https://af30af13-e0b7-4de0-aca7-7783c01eade2.filesusr.com/ugd/9757e7_e8cb899246444b51830a67a1c2dea33b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e8915b5-ae87-41fe-a075-288dc04543d2/latest_bollywood_celebrity_death_news.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE121 4456 bytes
SHA-256: 500c6690c921f7c86d39c118474a9429875b63abd239eedf18454b291a980928
font_01_sfnt_off0000f044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF044 10888 bytes
SHA-256: 3cf8f6a1462a83bd43242c3fd485eca63e1855e9de525bbccb6daf89974548f1
font_02_sfnt_off0001155c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1155C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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