Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04aa90abf24d24e…

MALICIOUS

PDF

79.0 KB Created: 2021-03-07 08:46:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 361a87cee5dfc6d2816bf89c9d54b5a8 SHA-1: 191dd82a2b221d765b424d98d22953e2efe3cdf3 SHA-256: e04aa90abf24d24e5d42500206c3430a743263145c5fe0774b808838b9883582
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to disposable domains and are used in a link farm configuration, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure designed to redirect users to malicious sites.

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://pelibifir.ru/aws?utm_term=vw+service+garages+near+me PDF link annotation
    • http://teksol.xyz/places_to_fix_car_air_conditioning_near_me05jwn.pdfIn PDF document text
    • http://itwomen.space/craigslist_sf_bay_area_personals_missed_connectionsmo6lc.pdfIn PDF document text
    • http://autobaff.xyz/binder_spine_template_microsoft_word83rz1.pdfIn PDF document text
    • http://nafarami.medianewsonline.com/what_are_the_14_principles.pdfIn PDF document text
    • http://tiktokfrance.fun/steve_jobs_the_man_who_thought_different_by_karen_blumenthal4xtbc.pdfIn PDF document text
    • https://jekaboda.weebly.com/uploads/1/3/5/3/135398795/70da8.pdfIn PDF document text
    • http://suberubepuparo.getenjoyment.net/how_to_make_money_reading_tarot.pdfIn PDF document text
    • http://bottlechainworld.com/69233660781x7hgv.pdfIn PDF document text
    • https://ralunudedosamot.weebly.com/uploads/1/3/4/8/134856058/dudadogedu.pdfIn PDF document text
    • http://gutprod.xyz/top_digital_marketing_podcasts_2020e50su.pdfIn PDF document text
    • http://todawis.22web.org/liwif.pdfIn PDF document text
    • http://italywow.pro/lojudell9ufj.pdfIn PDF document text
    • https://koberowebajufom.weebly.com/uploads/1/3/4/0/134096943/a44376cab.pdfIn PDF document text
    • https://bikigevoxepasi.weebly.com/uploads/1/3/4/7/134716722/dibatodojosaw.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://novupomajanox.atwebpages.com/6-5_rhombi_and_squares_answers.pdfIn PDF document text
    • http://somaguxu.epizy.com/sugaxena.pdfIn PDF document text
    • http://rosuwofa.rf.gd/47540993930.pdfIn PDF document text
    • http://xuvaduw.epizy.com/encyclopdie_universalis.pdfIn PDF document text
    • http://siwemoxoxawevuv.atwebpages.com/43551897710.pdfIn PDF document text
    • http://jasunusemoki.onlinewebshop.net/82385429235.pdfIn PDF document text
    • http://jasesazolaf.myartsonline.com/cabrio_dryer_does_not_heat_samsung.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_off0000ed6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6D 4804 bytes
SHA-256: c6608ce46c61e9ebae944082992c94ff6e181a562c54713e2857569016ce775d
font_01_sfnt_off0000fda9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA9 10300 bytes
SHA-256: a6986a6696e3b0e641157bb58ff6041546d334711dc5d1006604d0fb19f508a6
font_02_sfnt_off00012063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12063 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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