Malicious PDF — malware analysis report

Static analysis result for SHA-256 107ce229f495b34f…

MALICIOUS

PDF

71.0 KB Created: 2021-02-17 05:18:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3d25b2c64e8be7d6a80ee2daed8b1729 SHA-1: 58ee48f7df381a77cd593e1ca673239f71d1a9f6 SHA-256: 107ce229f495b34f6ee5cdefaa387928380ccb6e97315bd6c11914a9a93770c7
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wix?keyword=analyzing+quadratic+functions+worksheet+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460060/normal_5fc7ff2983d0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450048/normal_60058452f2f10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481676/normal_5fe1d0919fd40.pdfIn PDF document text
    • https://cdn.sqhk.co/pikuworano/jjAiddo/marvel_avengers_war_table_beta.pdfIn PDF document text
    • https://cdn.sqhk.co/posiraki/4jjgcgf/janol.pdfIn PDF document text
    • http://cccckkkkkdd.space/guidance_value_bangalore_2018-19ncb8z.pdfIn PDF document text
    • https://cdn.sqhk.co/sirepajaku/hcvKAhV/ninja_run_game_download_uptodown.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_600bdff0bd9bb.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/gMhbZgg/vidasupizoturikulawereb.pdfIn PDF document text
    • https://devudupaf.weebly.com/uploads/1/3/4/8/134880603/midezezewulujujiva.pdfIn PDF document text
    • https://vejotawugupexo.weebly.com/uploads/1/3/4/7/134756202/figere.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/rebomedug/24802841112.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/alarm_tone_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/free_forklift_inspection_checklist_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/tifetuziredoxoxazaguleti.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/88682303777.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/d_d_5e_character_sheet_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/vegas_pro_16_trial.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_off0000d854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD854 5708 bytes
SHA-256: 928b1a5feaa1beee59d28ff609b0981973db7f360778d7dc62cbfcc187dc7776
font_01_sfnt_off0000ebde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDE 10084 bytes
SHA-256: e10a96bac538367966d247abb366e119d249f7f412924a0543d014d2d7a2dd2b