Malicious PDF — malware analysis report

Static analysis result for SHA-256 1af12a8904261c32…

MALICIOUS

PDF

78.6 KB Created: 2021-02-26 10:42:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ad2aef064b05795674dfcec5967d464d SHA-1: 5bee0e29c98e489f81ccc949882ea6df8c335d82 SHA-256: 1af12a8904261c3251eb779f6129b5535257f01fb1a0560e2a291dd63fe25c53
156 Risk Score

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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gimoguvi.ru/strik?utm_term=samsung+grand+prime+plus+battery+price+in+bangladesh PDF link annotation
    • https://cdn.sqhk.co/ribobujir/idcjiy1/ludo_star_cheats.pdfIn PDF document text
    • https://zojegidaluvimov.weebly.com/uploads/1/3/4/1/134109086/fojuwaragokedu.pdfIn PDF document text
    • https://cdn.sqhk.co/dalegoti/ridgggg/my_movie_maker_android.pdfIn PDF document text
    • https://cdn.sqhk.co/sowojusawepu/geb1Wii/91258577949.pdfIn PDF document text
    • http://itclick.pro/street_fighter_4_ultra_moveszzbu3.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/hbZh6jj/faxitijesu.pdfIn PDF document text
    • https://cdn.sqhk.co/xasakeza/hcigCia/australian_ballet_classes_online_free.pdfIn PDF document text
    • https://ribofefafuf.weebly.com/uploads/1/3/4/7/134770843/bilaxiv.pdfIn PDF document text
    • https://cdn.sqhk.co/lusikagidet/he50Sz6/sijuditojonavizevupe.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/5865523659.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/ZbGljfd/2nd_grade_math_lesson_plans_using_manipulatives.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/KgcQUic/warship_attack_3d.pdfIn PDF document text
    • https://cdn.sqhk.co/pejemomet/hZggggL/19680204261.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vawirir.atwebpages.com/what_is_on_the_2_for_5_menu_at_burger_king.pdfIn PDF document text
    • http://piwakitidi.onlinewebshop.net/are_dna_tests_very_accurate.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 6

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF277 5832 bytes
SHA-256: 1cb839cb0c4b06c0d5a321efb6dd0003bab945538e86b533b009e227154c4ac5
font_01_sfnt_off00010622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10622 11524 bytes
SHA-256: 7a1727c7530dc46551ff016ec0fcce7fa12937135f1a30bf1795ce775375b584

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