Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecba997c44d8b31d…

MALICIOUS

PDF

62.3 KB Created: 2021-02-09 11:59:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 76b84e55518f3d6143ecdbbe83f50af3 SHA-1: a320b67f9a789182f7b9095140fa03f29adafce3 SHA-256: ecba997c44d8b31dd2b87ab615a37dbed88b77232e7f1bc3641a186f2ba0c23d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://seumenha.ru/wb?keyword=risk%20assessment%20template%20qld%20health PDF link annotation
    • https://cdn.sqhk.co/tiwefuxab/Pijn4p8/passion_color_mask_orange.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/4iggf4n/53998549297.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/zhhH7hb/wilexugesowibijusare.pdfIn PDF document text
    • https://cdn.sqhk.co/jinokazif/cgihiVT/ultimate_car_driving_simulator_hacked_version_free_download.pdfIn PDF document text
    • https://gefobivuvevu.weebly.com/uploads/1/3/1/3/131380717/2f84557.pdfIn PDF document text
    • https://cdn.sqhk.co/rugugojeba/ojagc0a/naija_highlife_music_mix.pdfIn PDF document text
    • https://jinuwipalo.weebly.com/uploads/1/3/5/3/135332432/544c9a265a7.pdfIn PDF document text
    • https://bukodagunotul.weebly.com/uploads/1/3/4/0/134012399/lufifoni.pdfIn PDF document text
    • https://viwoxinuzozaxa.weebly.com/uploads/1/3/1/6/131636825/xadukune-jojavojev-judadalikewi-wimipusalusovo.pdfIn PDF document text
    • https://tarutugiwom.weebly.com/uploads/1/3/5/3/135326066/zigod-gakinoxonowadu-numekazixi.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/vibasujefir/love_couple_cartoon_hd_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/radaronuniditiwara.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/video_converter_mp4_to_wmv.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/a_letter_images_love.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/rafikoxijanimedanukazim.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_off0000b8d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8D3 5300 bytes
SHA-256: 5c71b13fd8bf996fd834641ef3514fa99dac8021bbe263c0fe06d4a9bf19ae14
font_01_sfnt_off0000cab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB6 9884 bytes
SHA-256: 12c868431ceeb7c8dd2f5f415ad0c7eef2a89854f6c1420782d09278a5bb66c8

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