Malicious PDF — malware analysis report

Static analysis result for SHA-256 72aa1bf8603bcb1f…

MALICIOUS

PDF

72.7 KB Created: 2021-02-15 15:43:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 77b549a5afc1c0e058bd3b4cbab0c2e7 SHA-1: 9b77f7abd122e4b74a38f47e7b87d1ac2ce1c8b3 SHA-256: 72aa1bf8603bcb1f8ebc7eacd978ec176f7a127846cb0c01b2a49916c424a0b0
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=evony+age+2+npc+farming+guide PDF link annotation
    • https://cdn.sqhk.co/birenejar/iiaCm3z/95090287370.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450502/normal_60064e3a82b90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463266/normal_600fb6bf27b4d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454289/normal_60018d097b0cc.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvazuginu/KhijgCB/the_crossing_church_chattanooga_tn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376101/normal_5fda5fcc4acd7.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/ggfa422/animal_cinema_video_gana_dj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405946/normal_601c8963e05c4.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/4YjjLg6/89893995878.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380531/normal_5ff42329c2e2e.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/fMGgfgf/nererokonufilefudofuseguv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xujogefup.rf.gd/classic_aura_durations_addon.pdfIn PDF document text
    • http://dunoxoxuri.epizy.com/78140887619.pdfIn PDF document text
    • http://rojuzejuleg.rf.gd/sofunapibejumudewasiratek.pdfIn PDF document text
    • http://zarevamemamafo.rf.gd/74987569615.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_off0000df65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF65 5516 bytes
SHA-256: e264c255a8182db9d3771ee5b325bc432e03d4f7c5e769a70c2ad4ab5f7935bd
font_01_sfnt_off0000f22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22D 10532 bytes
SHA-256: aec5d6be7d355c141c7d76e68416a7bfd2c72dfe8ea28cec3c63798d063fb132