Malicious PDF — malware analysis report

Static analysis result for SHA-256 2338b2f1b3d9c06c…

MALICIOUS

PDF

72.2 KB Created: 2021-02-15 07:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: cbf8e1531d27709bbd690a0caef0377b SHA-1: 8fc644d038efccb3324cd0040fba1d7974b62649 SHA-256: 2338b2f1b3d9c06c79a80fbf5b36650b77583c3190d30370a91448315b9a16b2
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=word+brain+answers+penguin+14 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4485157/normal_5ff693c304e03.pdfIn PDF document text
    • https://cdn.sqhk.co/pawapoma/M67hhia/ball_breaking_bricks_game_code_in_java.pdfIn PDF document text
    • https://bulugigedi.weebly.com/uploads/1/3/4/7/134714886/a16c0237f2.pdfIn PDF document text
    • https://cdn.sqhk.co/gavezexu/M7zhf0t/54223779894.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/bjihhgG/28277333370.pdfIn PDF document text
    • http://mysteps.online/sekubanaxajewelilun8erhr.pdfIn PDF document text
    • http://verefdliyvtorogo.xyz/jututivedoboxakufoocaj9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375890/normal_5ffb896a2a808.pdfIn PDF document text
    • http://centerverifybadge.com/724863974751tx7y.pdfIn PDF document text
    • http://meetsoda.pro/60035087783ttuee.pdfIn PDF document text
    • https://cdn.sqhk.co/wotirixa/hgGcjjm/24386670772.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/pnhahgk/video_tik_tok_kannada_song.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370740/normal_5fe1b854d4198.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365601/normal_6004826ef2331.pdfIn PDF document text
    • http://itwow.info/gepolutumh1my.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/o3iciic/stickman_revenge_2_uptodown.pdfIn PDF document text
    • https://neripekotijoba.weebly.com/uploads/1/3/2/6/132681370/jutesixusa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bifamomove/5928470500.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/jakuxiwoxosopoxaralakural.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/microsoft_word_tri_fold_pamphlet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/u_dictionary_app_english_to_kannada.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD110 5284 bytes
SHA-256: ff9a4ec552feff16041df17ad81afe1d019d0a548d58d906009361385c38732a
font_01_sfnt_off0000e330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE330 9988 bytes
SHA-256: c2217ecc0ba92f8d3f95224feb303c536464892151d5e2bd8374d6b897a2a0cd
font_02_sfnt_off0001057f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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