Malicious PDF — malware analysis report

Static analysis result for SHA-256 92f9d29eaa159898…

MALICIOUS

PDF

77.5 KB Created: 2021-03-22 00:33:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8f500d363093eefbf0068c54329a2d25 SHA-1: 2ddf5d57789d80dabfe2ae7ecb7af03f2eb3a097 SHA-256: 92f9d29eaa159898e9d57e030657b101b9d312fff47290a0e12043ff74b7adac
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/wix?keyword=alligator+point+marina+condos PDF link annotation
    • https://rebumazezip.weebly.com/uploads/1/3/4/8/134860465/c4b021.pdfIn PDF document text
    • https://giximelet.weebly.com/uploads/1/3/4/2/134234701/9aea72.pdfIn PDF document text
    • https://vejiledulibona.weebly.com/uploads/1/3/4/3/134318828/f1f66910bb0.pdfIn PDF document text
    • http://fumuponi.22web.org/minn_kota_raptor_specs.pdfIn PDF document text
    • https://fubaxegadajud.weebly.com/uploads/1/3/4/4/134454669/mesugovulokofupodu.pdfIn PDF document text
    • https://ravuripuzi.weebly.com/uploads/1/3/5/9/135958818/9403649.pdfIn PDF document text
    • https://xidazujagavoza.weebly.com/uploads/1/3/1/4/131453269/neruzap_rifexefamevem_sofasoj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/29189167333.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/aronchupa_songs_video.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/android_rpg_games_like_diablo.pdfIn PDF document text
    • http://pixuxurarosu.epizy.com/acknowledgement_sample_for_book_report.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/electrical_questions_and_answers_for_interview.pdfIn PDF document text
    • https://77a80da1-97a3-4b40-ba11-54c6d232eb66.filesusr.com/ugd/39a0fd_0c5bb9278c6644e680026c36316aae77.pdf?index=trueIn PDF document text
    • https://c8f6a2ed-bc8a-4fd4-b26a-19707db7c4cd.filesusr.com/ugd/1cc7e8_b7fd09fc74ed4222909b3a0ea23d016c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/fourth_grade_division_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/wilderness_survival_merit_badge_survival_kit.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/53974393838.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/destro_lock_pvp_guide_7._3._5.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/cervical_screening_guidelines_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/4059941726.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
stream_004_off0000ffd8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xFFD8 11420 bytes
SHA-256: 70976ef65d5ec4d7471659878a1720f46bc54db25dda1302c7bacec6ab7fa89a
font_00_sfnt_off0000eda3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA3 5380 bytes
SHA-256: b52fbfc7a7aa4fcc8debe478986b5a0d73fa40a33830f7fc9c75efa9dcb9e505

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