Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d129aacbdbbe04…

MALICIOUS

PDF

70.0 KB Created: 2021-02-20 06:42:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 022e57ee7579d1020f9513a52e46c1f1 SHA-1: d4937294d71e9be31e042fdb55c5f61243b085ed SHA-256: 79d129aacbdbbe04c10d349d2e57c6bbd7c69d7c12334ab95b87ff46d5b13d6b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/wix?keyword=unblocked+games+99+ssf2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455403/normal_601df36ddb17c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491437/normal_5fe568176c5ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427519/normal_5fe660c81e32f.pdfIn PDF document text
    • http://arm-watch3.club/96651432508wqpey.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470696/normal_6016a5f1ee34b.pdfIn PDF document text
    • http://byseles.xyz/kozomimadugufavidiredom8mhlw.pdfIn PDF document text
    • http://medway24.com/magewiwufamevu5wyk6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470533/normal_60099e71ee413.pdfIn PDF document text
    • http://trafikcezaodebayisi.com/93457407865sjwrp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zusirutovazume.epizy.com/zorod.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/bailando_spanish_version_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/nifukesolidofiroxekonib.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/beethoven_ode_to_joy.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/how_many_calories_in_rice_paper_sheets.pdfIn PDF document text
    • http://jometuxinuvalal.epizy.com/bhoot_fm_20_july_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/bowixigazugimazun.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C5 5728 bytes
SHA-256: 94ff2f3f69588c5decaa46ef7414dfe51ca37de4a1f2b82b4da9011708fd5753
font_01_sfnt_off0000e73d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73D 10616 bytes
SHA-256: 864843bcd157d2f7b78e80ae1a9889439553e2cff7514365f0b2081e9f9bdbdc