Malicious PDF — malware analysis report

Static analysis result for SHA-256 abeca75575df61f5…

MALICIOUS

PDF

157.9 KB Created: 2021-03-29 04:17:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 5ac46e2ec513d3289c09e718a908b075 SHA-1: c7d816f9e8cc552cfb5f8d9cf052779054367ab1 SHA-256: abeca75575df61f50034a27fdbbb589ee95133850fd256c5456f125140b59d5b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable or suspicious domains, and is flagged by ClamAV as Pdf.Phishing.Trojan. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a link farm structure, suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://jacksth.ru/strik?utm_term=origami+heart+box+paper+kawaii PDF link annotation
    • http://wow50.pro/68676615202t7tlf.pdfIn PDF document text
    • http://koteyarn.moscow/62150028837zgf1s.pdfIn PDF document text
    • http://gakmancreatures.ru/left_behind_series_audio_bookshl9qw.pdfIn PDF document text
    • http://pekokaxa.22web.org/17110559871.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_c1e26e8cda5741afb5381c6bd6592267.pdf?index=trueIn PDF document text
    • https://72dfff08-f6cb-4f5d-aaac-ebe71175d6a6.filesusr.com/ugd/c268f7_cbc6c262c5d842ba88a6f98fbaed5ad7.pdf?index=trueIn PDF document text
    • https://5e04165b-6ab1-49a6-9937-45006fc2fbeb.filesusr.com/ugd/d19879_f5117b26a27446ff98960ae05b52f755.pdf?index=trueIn PDF document text
    • https://e0d0d77b-4c00-4265-bc22-f0cc5cf11ada.filesusr.com/ugd/957eb4_39f8f9ddeea54849bd53bb086e9c3a7b.pdf?index=trueIn PDF document text
    • http://bilunijo.epizy.com/sagedifinejagoga.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/bailando_hd_mp4_video_song.pdfIn PDF document text
    • https://e8dc5420-792a-4861-90db-09cfc8d8a7d1.filesusr.com/ugd/1378f5_ce055e38631a43458047b86188be9757.pdf?index=trueIn PDF document text
    • https://abee6ad4-cf47-459a-954e-22b9b9bb30ad.filesusr.com/ugd/4bdc6d_946d3a275f4140d9b31e64cf964bbe31.pdf?index=trueIn PDF document text
    • https://b3d988c2-7a7d-4c3c-9141-221b6550481e.filesusr.com/ugd/9dda13_0a0b0a07107d4aa0b743a880a57dacb7.pdf?index=trueIn PDF document text
    • https://121f8fc1-d270-4171-a721-8ccd656fc20f.filesusr.com/ugd/2ca22b_20a21bcaacde408683c058fedda513b0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/the_founder_movie_guide_questions_and_answers.pdfIn PDF document text
    • https://b3695a61-a5b7-457a-863f-99677d03e0cc.filesusr.com/ugd/f2a82d_5722c2d6b7b7479682bef086b58278b7.pdf?index=trueIn PDF document text
    • https://cd489911-dc6d-4439-b408-84622343fb93.filesusr.com/ugd/d8e941_7572f39b294e4fb08ae6987944500f18.pdf?index=trueIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF617 6588 bytes
SHA-256: 24fd6868f187b5667792517f9f69d22ac5a3de5011d4d3824467392effeade79
font_01_sfnt_off00010661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10661 85804 bytes
SHA-256: 331d883b7ac726924573d76454dc7e75ae2d5aec51e053676e4b9f4ead494ace
font_02_sfnt_off00020744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20744 5416 bytes
SHA-256: 9d795705f21c99c03a55f102229064e235fa6f585cd0ff889a598bc6f4488b6a
font_03_sfnt_off0002198e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2198E 4044 bytes
SHA-256: bacfdd930e24f2b184c87d04f31206b8ebaae65bab39b46d75a33cccaa93cb62
font_04_sfnt_off000226e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x226E0 11300 bytes
SHA-256: 90c2723346a6bb084d1b3527a6cc6848863bbbc678bcaca5bc905466f5ff6f40
font_05_sfnt_off00024e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24E00 16856 bytes
SHA-256: 83a7a235056a7aa3bf77387ed492615ba50bee6886e942c4f7dd7f3c6f9246f9

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