Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5eb84a94fd619bd…

MALICIOUS

PDF

95.5 KB Created: 2021-03-29 16:26:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c2bb297412cbac8ed592ab85095eb8f0 SHA-1: 544f278483b743961cbe22ede8352f2ea8af1027 SHA-256: b5eb84a94fd619bdf758f55765a72e4cfaad8edd16474c5a84d6fd09bb1948ae
126 Risk Score

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-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://soxebez.ru/award?keyword=baldrige+core+values+and+concepts+pdf PDF link annotation
    • http://kopawaruda.22web.org/difawilotanorugatiwejuka.pdfIn PDF document text
    • http://fokikizuxijem.iblogger.org/69333780691.pdfIn PDF document text
    • http://brettlockhart.com/3d_wallpaper_background_hd_apkh0klg.pdfIn PDF document text
    • http://intekzafast.online/p_touch_resetx8nyw.pdfIn PDF document text
    • http://xebasebidigu.iblogger.org/nebuja.pdfIn PDF document text
    • http://flowerport.shop/the_fall_2006_film_castcndzp.pdfIn PDF document text
    • http://fullhp.info/nebisewuxomenosevy3t2.pdfIn PDF document text
    • http://bazis-rostov.com/pokemon_gba_list_hackg59n9.pdfIn PDF document text
    • http://getyourcredit.info/english_hd_movies_free_for_mobilehimtv.pdfIn PDF document text
    • http://sunepoxuvigos.66ghz.com/74532486502.pdfIn PDF document text
    • http://cmbespaceclient.xyz/nozinazuwose7itt7.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://kovemipenege.rf.gd/math_worksheet_answer_key_finder.pdfIn PDF document text
    • http://fodarevo.rf.gd/79450671768.pdfIn PDF document text
    • https://8650d040-a33d-467d-a608-6706f181f11b.filesusr.com/ugd/61b8bf_328f4e546d464697ad02ad70ff05394e.pdf?index=trueIn PDF document text
    • https://37bdae34-bb2f-403f-997c-54a7c09d9c06.filesusr.com/ugd/dc98cc_04379a21de784fb08c3428bd988c4ea6.pdf?index=trueIn PDF document text
    • https://7980b0ff-2efe-48f4-a442-6c87bca80713.filesusr.com/ugd/9bd8c3_c8249445fd744d8980ba9d3b3b5b9858.pdf?index=trueIn PDF document text
    • http://xipitidugizen.rf.gd/44817342882.pdfIn PDF document text
    • http://gexijefepawu.epizy.com/canaanites_history.pdfIn PDF document text
    • https://16fd3b15-5541-4454-9538-28daacbf497e.filesusr.com/ugd/e32576_a4bee8429c0f46809e94db3f7cfb2bbb.pdf?index=trueIn PDF document text
    • http://befojarariwowab.epizy.com/7437467593.pdfIn PDF document text
    • https://dba0ca6b-c979-46b3-87c9-041648dee063.filesusr.com/ugd/6f58fb_01525302b21a41e3b7ca8cdd7123be37.pdf?index=trueIn 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_off00012927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12927 5312 bytes
SHA-256: f97e42ee6660a7079a53a2fecb1235e62b614c034f6f3047bc4733ef9acd4425
font_01_sfnt_off00013b48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B48 11592 bytes
SHA-256: e36123df5fab1f7308247cafdad5b2f4b355f99c6a298688728ca361c8edd858
font_02_sfnt_off00016298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16298 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.