Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccd78d32ed4e6b2f…

MALICIOUS

PDF

70.6 KB Created: 2021-01-21 13:20:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1b038ffc47fca5aec4e8040c3e36a742 SHA-1: 164107d8ad99481499e638f79f775cd85e2db662 SHA-256: ccd78d32ed4e6b2f128af2d30a5ffdd3c7749ebbcd0100c7945c9a9e5284a061
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://seumenha.ru/aws?utm_term=python+libraries+windows PDF link annotation
    • https://cdn.sqhk.co/bomemenun/hhcscia/xopafugir.pdfIn PDF document text
    • https://site-1175416.mozfiles.com/files/1175416/gakukilituvidufujefis.pdfIn PDF document text
    • https://site-1180896.mozfiles.com/files/1180896/58655388776.pdfIn PDF document text
    • https://site-1248162.mozfiles.com/files/1248162/invisible_inc_trophy_guide_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/wodaximewule/gcbjbjj/lifenaditukazesinije.pdfIn PDF document text
    • https://cdn.sqhk.co/sogupavetut/cjfZghR/lidosovewirawegarufafod.pdfIn PDF document text
    • https://site-1252989.mozfiles.com/files/1252989/gongsun_zan_campaign_guide.pdfIn PDF document text
    • https://tetiwaxope.weebly.com/uploads/1/3/0/7/130776033/pasuxukezuri.pdfIn PDF document text
    • https://cdn.sqhk.co/wakivugex/jiYLls2/match_play_off_hockey_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/golomamone/4sihk0R/launchpad_alan_walker_app.pdfIn PDF document text
    • https://site-1172169.mozfiles.com/files/1172169/sevaradu.pdfIn PDF document text
    • https://cdn.sqhk.co/kimokajuz/idOhjug/rise_up_lyrics_alexander_hamilton.pdfIn PDF document text
    • https://cdn.sqhk.co/puzokopu/hfnuRvr/mechanic_near_me_cheap.pdfIn PDF document text
    • https://cdn.sqhk.co/xebibugekux/ghaqjgs/siegefall_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/buruvalufe/Ujiwjgg/leapfrog_leapstart_3d_learning_system_reviews.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD53E 5248 bytes
SHA-256: 0365d7e0d0b157ff616a5ef74a2a590529f6988767b4279577c5acf7354201c6
font_01_sfnt_off0000e719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE719 11224 bytes
SHA-256: 22c73373318c4ac731221811f1f3348f76d6038e9f442148853a79395567b93e