Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f30146f486705f9…

MALICIOUS

PDF

72.7 KB Created: 2021-02-22 14:40:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0f0f64c5830599dd6117b6646a685927 SHA-1: 94ebdb46c0d20001059d3c0b33918f002cc2447d SHA-256: 8f30146f486705f98d9523c7f76d43449a2d63f5d38c05571a8a8a7508727196
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://yafferge.ru/wix?keyword=repelis+plus+24+online+gratis In PDF document text
    • http://gakofutelaxojo.22web.org/52323732415.pdfIn PDF document text
    • http://healthyforczechrepublic.site/flip_phones_for_seniors_t_mobilee7vk5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387716/normal_5fe1c9ca20631.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423462/normal_5feb496ca89f7.pdfIn PDF document text
    • http://jadebey-x.com/33844607803lffo6.pdfIn PDF document text
    • http://orbitan.fun/agnisakshi_serial_song_free_in_telugumlaza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450043/normal_5fca9359ead96.pdfIn PDF document text
    • http://tiktokcopyrighthelpteam.com/dragon_ball_z_season_1_english_dube4stb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385647/normal_602a7b6756938.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385009/normal_5fd67e7832bcf.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/divikufifir/hello_brother_tamil_album_song.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/orchestral_scores.pdfIn PDF document text
    • http://simalivalobo.rf.gd/sevidatufofepasapopimi.pdfIn PDF document text
    • http://bivuraxut.rf.gd/android_studio_gitignore_gradle._properties.pdfIn PDF document text
    • http://fosekor.epizy.com/18745218677.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/razelidukemajelutedox.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77C 5216 bytes
SHA-256: 50b9cb87fb52ae8be4d62dc39ed324df619db3908341a203ca3e1f41eaa25b04
font_01_sfnt_off0000e951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE951 1648 bytes
SHA-256: 4a8ebde5e94bd7e49bcaf164f77963ab18066d5334cf8871f4ac3f3f313d9c8a
font_02_sfnt_off0000f194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF194 10032 bytes
SHA-256: a6f6a4ea88f03f2524842a2d25d9c1799e65eaf29512d1673d68b56267ef3bf8