Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ab9700b0ba3523…

MALICIOUS

PDF

75.3 KB Created: 2021-03-18 15:41:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: c4c5c8f75167bc75b310267d941ca59f SHA-1: b25f6b55761e0ab11390edd6f2c505da31415b4d SHA-256: 01ab9700b0ba3523b53f831e509e1b256f0dfed0ae296189a2fb0d0e90b09b54
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1105 Ingress Tool Transfer

The PDF contains a high number of external links, many pointing to what appears to be an SEO link farm designed to attract traffic. One prominent URL, 'https://soxebez.ru/wix?keyword=sleeping+venus+and+cupid+analysis', is identified as a redirector, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and the nature of the links indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/wix?keyword=sleeping+venus+and+cupid+analysis PDF link annotation
    • http://giduwudiz.iblogger.org/naruxezedezufudunugi.pdfIn PDF document text
    • https://suzefajadovu.weebly.com/uploads/1/3/4/5/134592553/jotike.pdfIn PDF document text
    • https://cdn.sqhk.co/potebuso/gfi0Ihc/ace_dice_dominoes_multiplayer_games.pdfIn PDF document text
    • https://zewijevatijafat.weebly.com/uploads/1/3/4/2/134265582/vekaxawevikifez.pdfIn PDF document text
    • https://cdn.sqhk.co/zuzemokobexo/cje8klW/dugulejaziwonogemozi.pdfIn PDF document text
    • http://zexaribamemavi.sportsontheweb.net/nipabinuzonaziwipifo.pdfIn PDF document text
    • http://koxivesuvif.mypressonline.com/71290526840.pdfIn PDF document text
    • http://kejadejaw.iblogger.org/56080478407.pdfIn PDF document text
    • https://cdn.sqhk.co/fadejiweruw/dUdhfPc/fitueyes_dual_monitor_stand_riser.pdfIn PDF document text
    • http://jofipifemu.medianewsonline.com/p90x_workout_videos_free.pdfIn PDF document text
    • https://damafurota.weebly.com/uploads/1/3/5/3/135337485/2851221.pdfIn PDF document text
    • https://cdn.sqhk.co/suxevevagova/EjiMXge/53215483680.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/lerezazo/how_to_build_a_12v_lithium_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/71737076632.pdfIn PDF document text
    • http://dibogazosenu.epizy.com/fovenekodad.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/nositapu.pdfIn PDF document text
    • http://lugimeviguv.myartsonline.com/riliwigaw.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/announcement_background_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/bvm_school_barnala_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/24087595862.pdfIn PDF document text
    • http://dapufojutujat.atwebpages.com/39252208274.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/vovipetapovuj.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/16577830510.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_off0000e790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE790 5408 bytes
SHA-256: 8f85fd80a9a0722aa4d3f521461ae698b14f529c7464b57613978424a994cdc8
font_01_sfnt_off0000fa1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1A 11184 bytes
SHA-256: 2f29982477c06a2a0eba0fe920fda2bb1d71b1103c5bd9a371dfb7b8cbd19470