Malicious PDF — malware analysis report

Static analysis result for SHA-256 3af1962000969c62…

MALICIOUS

PDF

72.3 KB Created: 2021-06-11 23:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fcb2c0c942ecb3ae4963a358f8707abb SHA-1: 3b921b2d5d725a0577a84a4cfcc40efa4dcef8fb SHA-256: 3af1962000969c624d3369aa96159eb2656a592ea386363d86e86c772cd31fd4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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-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://pixomot.ru/pbw?utm_term=bingo+and+rolly+lyrics PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427519/normal_60655b825240e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405208/normal_6054fe17add29.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dakenesemi.pbworks.com/f/15205110701.pdfIn PDF document text
    • http://ximusutoj.pbworks.com/w/file/fetch/144695460/what_is_the_main_point_of_a_rose_for_emily.pdfIn PDF document text
    • http://letonepamusi.pbworks.com/w/file/fetch/144465756/skyrim_tending_the_flames_persuade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bee68f8-299b-45f9-99fd-6c2c3dc1dfe8/97294538781.pdfIn PDF document text
    • http://zafobagusaz.pbworks.com/f/algebra_2_pretest_multiple_choice.pdfIn PDF document text
    • http://josinibugaju.pbworks.com/f/xbox_one_x_emulator_for_android_download.pdfIn PDF document text
    • http://foxobekizax.pbworks.com/w/file/fetch/144466215/biologia_y_geologia_3_eso_santillana_serie_observa_descargar.pdfIn PDF document text
    • http://risodige.pbworks.com/f/surah_yaseen_audio_qari_sudais.pdfIn PDF document text
    • http://rasovuxosew.pbworks.com/f/colorado_ccap_income_limits.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2f12121-e9f5-4a31-863d-69519265bf2b/common_core_standards_patterns_first_grade.pdfIn PDF document text
    • http://poguvovuk.pbworks.com/f/how_to_download_word_on_windows_10_for_free.pdfIn PDF document text
    • http://jesababa.pbworks.com/f/nuvebodoz.pdfIn PDF document text
    • http://mukonisu.pbworks.com/w/file/fetch/144459522/vikings_season_2_episode_10_explained.pdfIn PDF document text
    • http://wixugigir.pbworks.com/f/21338274516.pdfIn PDF document text
    • http://lomubel.pbworks.com/f/51180352657.pdfIn PDF document text
    • http://lalunanefiw.pbworks.com/w/file/fetch/145098477/sagub.pdfIn PDF document text
    • http://beratirupo.pbworks.com/w/file/fetch/144508959/80928361330.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB2 5260 bytes
SHA-256: 8172d77581efcc68eca34b862a4d257e39e8cf3b92edf31e8a9c0e488d49c367
font_01_sfnt_off0000eca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA9 11188 bytes
SHA-256: e053a83cf103f319b2136cde9e892a3f54f90a091bf52b07deadb14c0cacb010

Open this report in the interactive analyzer, or submit your own file for analysis.