Malicious PDF — malware analysis report

Static analysis result for SHA-256 888ba5723846f068…

MALICIOUS

PDF

69.3 KB Created: 2021-03-28 23:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0416a54de83460201d1ead0e63ae89c4 SHA-1: dc09d984b794642be3e7a2b2974ee70a6b7027f6 SHA-256: 888ba5723846f06851a7878cca22282bac01ae669b265323f1eb7dc21f4efa5d
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it's a phishing lure, specifically using an image to redirect users to a suspicious URL. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL, 'https://golowaki.ru/wix?keyword=douchebag+chick+unblocked+hacked', is the primary indicator of compromise, likely leading to a phishing or malware distribution site.

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
  • 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://golowaki.ru/wix?keyword=douchebag+chick+unblocked+hacked PDF link annotation
    • https://cdn.sqhk.co/gepumenujeme/ggQNdjh/dragon_lord_deck_yugioh.pdfIn PDF document text
    • https://cdn.sqhk.co/wememiguw/dNCiejd/kaxeverowo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459055/normal_5fe2f43d5295e.pdfIn PDF document text
    • https://cdn.sqhk.co/letabuner/jdjhJgf/dfm_foods_annual_report_2018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366044/normal_5ffb85f9704e1.pdfIn PDF document text
    • https://cdn.sqhk.co/jegamaxegev/ichipji/bimelewax.pdfIn PDF document text
    • https://cdn.sqhk.co/surixirulol/jrgcfii/driving_school_academy_2017_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nudogada/cPWheys/58504607546.pdfIn PDF document text
    • https://cdn.sqhk.co/xafazunusa/JidwMc5/kann_ein_kindle_lesen.pdfIn PDF document text
    • https://cdn.sqhk.co/luwiwaduna/jbhbKjf/vimetuzuragibuja.pdfIn PDF document text
    • https://cdn.sqhk.co/jesarijufe/2hivggc/79893320955.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/voropa/wobog.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/77933195057.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/numaruk.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/virugasasawar.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/51881450790.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/baxexuruwedukoliwabumir.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/42310140918.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/schindler_s_list_soundtrack.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/90350399502.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/audio_recorder_and_editor_android.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/40918702303.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d25f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD25F 5132 bytes
SHA-256: d4be4aa07f817afc80b8eed7fe7eefbc59bdf3e7a9345db8599f9e659e66db74
font_01_sfnt_off0000e3d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D9 10676 bytes
SHA-256: 478c54a655cdb219df2a38865daea032508cf92262893e098f61214588f172e4

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