Malicious PDF — malware analysis report

Static analysis result for SHA-256 50b7299fb3690464…

MALICIOUS

PDF

70.8 KB Created: 2021-02-28 20:17:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5686d801e99f34d125927ba8179e9007 SHA-1: 9012aa80cb99d7b0bb5d7fd42adb423cd45d8da9 SHA-256: 50b7299fb3690464b36288b8b3957de76b92a15b15abc6b150319a5d765f55c2
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=inoty+pro+apk+uptodown In PDF document text
    • http://all-host.site/29074955785m0qgq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448115/normal_5fd60084b8d4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384149/normal_5fcce1a1528d5.pdfIn PDF document text
    • https://xosagosogasimaj.weebly.com/uploads/1/3/1/4/131453054/setowopofot_sumawagipeb_fitegapoli_xudonob.pdfIn PDF document text
    • https://vejefipilarof.weebly.com/uploads/1/3/4/6/134663014/e25502.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485927/normal_5fc98682a72a1.pdfIn PDF document text
    • http://civiliscmq.online/supercross_the_movie_full_movie_freeyxmqz.pdfIn PDF document text
    • https://lefamadagizid.weebly.com/uploads/1/3/4/7/134704745/jojaxowuku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500668/normal_6038577e44bfa.pdfIn PDF document text
    • http://baltika-trans.com/immigrants_in_our_own_land_answer_key9k8yx.pdfIn PDF document text
    • http://bufo.online/shogun_ebookc068s.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/fhaHibq/ramuzunuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370275/normal_600de39818f43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392652/normal_5fce31f121307.pdfIn PDF document text
    • https://jubipolofolexi.weebly.com/uploads/1/3/2/3/132302872/30778523e21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376852/normal_60258df1944f5.pdfIn PDF document text
    • https://cdn.sqhk.co/gukugifixija/gjesjic/winking_lizard_independence_beer_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/pgihOUN/world_soccer_2018_cup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425238/normal_5fe455c8af8ee.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_off0000da0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA0B 4936 bytes
SHA-256: 1ff6a96985dedfbc7eab37929a36eb0d43a92235d938fbf2e031c47f84f5202c
font_01_sfnt_off0000eaff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFF 10184 bytes
SHA-256: e3a8cd54451c39dc16ae551021d732cac3a8d4998ec70e6696cb1994391b845b

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