Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8b00e759abb0cdb…

MALICIOUS

PDF

73.4 KB Created: 2021-02-14 05:54:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1fc3595997e03eee8493b81217fdf7a1 SHA-1: ece3b2dafa3aed4ec61c19ef5c599ef6b53317c8 SHA-256: b8b00e759abb0cdb8f4db5ae833104d86ceed45490c7732a0cdd1319fa60cd5e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=quadratic+equations+worksheet+class+10 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4475730/normal_6006101bc9c29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471488/normal_5fde10c45c476.pdfIn PDF document text
    • https://cdn.sqhk.co/telupiza/RQb5GE9/payday_2_stealth_assassin_mod.pdfIn PDF document text
    • http://reactivaperu-2020.com/70191906017mpobd.pdfIn PDF document text
    • http://goodnatural.space/34894173761e12jh.pdfIn PDF document text
    • http://copyrightsupport-ig.com/rujipavurofimx60.pdfIn PDF document text
    • http://umniashka.ru/the_gashlycrumb_tinies_alphabetcdsto.pdfIn PDF document text
    • http://scm03.ru/180504329886j1ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448556/normal_5fdd447a20ef9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446260/normal_5fdf6a33cf769.pdfIn PDF document text
    • http://newser.site/lok_sabha_election_result_2019jkj5u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479925/normal_5fe62261a9c6b.pdfIn PDF document text
    • http://polnews.xyz/weight_and_height_guide_chart_femalejfpyk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382201/normal_5ff328a47896f.pdfIn PDF document text
    • https://cdn.sqhk.co/gijosevozu/L9gfjdY/clicker_racing_prestige.pdfIn PDF document text
    • https://cdn.sqhk.co/nagebagem/ib3jahz/c64_emulator_android.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
    • 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_off0000d388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD388 5444 bytes
SHA-256: 2cc2d860839a9fe7677a5734db60633c18f073c9c5ff57e6a8846bc88469ee1e
font_01_sfnt_off0000e612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE612 10556 bytes
SHA-256: f40d7af9b040438cd32473e914de985047c87da5c0c01ea512c5b32422e26c6e
font_02_sfnt_off00010a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4E 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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