Malicious PDF — malware analysis report

Static analysis result for SHA-256 20c1e9ba5c3949bf…

MALICIOUS

PDF

72.2 KB Created: 2021-02-11 14:24:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2d73ea4be81bfd6fa1edc2884cfe211f SHA-1: bdea2f7fbf5be5ff87579b1089d20b477bdc501b SHA-256: 20c1e9ba5c3949bf718c1b3e7bc1cb7be888d7deed747e598338e64c1c0351db
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=get+rid+of+rats+in+attic+uk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4414500/normal_5fd8e9d46385c.pdfIn PDF document text
    • http://normal-id.com/the_four_fundamental_concepts_of_psychoanalysisjcz6k.pdfIn PDF document text
    • https://zuwumepegowivos.weebly.com/uploads/1/3/1/0/131069935/5c348.pdfIn PDF document text
    • https://jexelokase.weebly.com/uploads/1/3/5/3/135321670/zelapole_julobu_ragobal.pdfIn PDF document text
    • http://formverifiedbadge.com/daily_astrology_app_android1qqno.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/jeiigfB/internet_speed_meter_lite_pro_apk_onhax.pdfIn PDF document text
    • https://cdn.sqhk.co/pegidago/TTJ6Pij/skateboard_party_2_pro_download.pdfIn PDF document text
    • http://azalea.store/wavread_matlab_2016k19ki.pdfIn PDF document text
    • https://cdn.sqhk.co/sopiloroda/idi8k9y/8724833447.pdfIn PDF document text
    • https://vamekatowozi.weebly.com/uploads/1/3/0/8/130814347/suzazuvikuvip_zevomimu_zinara_wiwekaf.pdfIn PDF document text
    • http://tamakar.xyz/reporting_anova_results_in_textkkxk3.pdfIn PDF document text
    • https://moduruwili.weebly.com/uploads/1/3/2/7/132710657/gefimozo.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/tidigudetefumof/chicken_shawarma_salad_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/10509598465.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/angular_4_form_dirty_pristine.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/humans_series_2_episode_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/hoodie_mockup_psd_free.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_off0000de73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE73 5076 bytes
SHA-256: 172e7d1432516b3a7bb720577270d79d699ed4d1ed59814949f3b3b04bd90ffd
font_01_sfnt_off0000efce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCE 10588 bytes
SHA-256: 30bb2ffabdc542c4179c5f34872ccd1aa298433bc530dfa2dd54fae95ccc5ab7

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