Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3a506e7d4b24c44…

MALICIOUS

PDF

71.6 KB Created: 2021-03-02 10:36:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6d1cf324520329dcf010e30b16de7b20 SHA-1: 6f1d09ded61e6a10af6fb746ae68129f5cca4cd5 SHA-256: a3a506e7d4b24c4432249f26a5cf8b64b3e7e127a63b504ae21612fdbb5230ad
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://vilenefex.ru/wix?keyword=minecraft+pe+12.0+download+apk+1.1.0.9 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379987/normal_5fdde4881ac7e.pdfIn PDF document text
    • http://thehensleys.org/59101974945owni2.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/96855206319.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/how_to_determine_age_of_rinnai_water_heater.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404123/normal_5fdc427859869.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426425/normal_5fec21244ee78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389606/normal_600d60c45737e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378406/normal_6007b65ca9e2a.pdfIn PDF document text
    • http://terasivox.22web.org/soul_music_70_s_free.pdfIn PDF document text
    • http://lebedugipul.mywebcommunity.org/roderegumuwefexasabig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412778/normal_5fff436fd7c0a.pdfIn PDF document text
    • http://storeplus.pro/92754183529t5lsl.pdfIn PDF document text
    • http://realnoe-obshenie.online/banjara_songs_mp3_free_downloadsfc94.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pizuzol.onlinewebshop.net/how_to_reset_bosch_500_washer.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_off0000d9bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BB 5648 bytes
SHA-256: 278f9674379803ba26692b61d52b3149e95627c03ccaeee8b7f1debdc54ad475
font_01_sfnt_off0000ed35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED35 10476 bytes
SHA-256: 718635e2d029265381e5ef7afa8473096cbaf598c3f4836ca15d983f349a8b58