Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1280b98d827c05a…

MALICIOUS

PDF

80.3 KB Created: 2021-05-16 13:04:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 36cdc561a01bbd4e49201a6ea7beaf0d SHA-1: 1bc9ff96f43fea33650b4e9b160722f071cdf630 SHA-256: e1280b98d827c05af35b9767f5ac4c62e15483eded19a78068c7b630ab721cc2
126 Risk Score

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 0.9996

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://bologen.ru/strik?utm_term=how+do+i+pair+my+bluetooth+headphones+with+my+samsung+tv PDF link annotation
    • https://cdn.sqhk.co/fakineduxafe/hgiegiA/game_of_thrones_cast_season_5_episode_3.pdfIn PDF document text
    • http://wivevemeb.scienceontheweb.net/62176385772.pdfIn PDF document text
    • https://kuvixirizu.weebly.com/uploads/1/3/0/7/130739951/c67178d8bf.pdfIn PDF document text
    • http://zujewubowufonug.scienceontheweb.net/6436253718.pdfIn PDF document text
    • http://riwalimuj.scienceontheweb.net/xizubuluz.pdfIn PDF document text
    • http://tosezepokonone.iblogger.org/allen_online_test_series_for_neet_2020_syllabus.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/je39khe/spray_tie_dye_kit_walmart.pdfIn PDF document text
    • https://suxegetolikas.weebly.com/uploads/1/3/4/0/134097713/9083051.pdfIn PDF document text
    • https://cdn.sqhk.co/xetorexevapi/hajf4ew/8107208905.pdfIn PDF document text
    • https://pozusope.weebly.com/uploads/1/3/1/4/131453674/5021813.pdfIn PDF document text
    • https://cdn.sqhk.co/dadakafopina/jghhhig/age_of_clash_of_clans.pdfIn PDF document text
    • http://sukuwodexi.scienceontheweb.net/alcoholismo_definicion_oms.pdfIn PDF document text
    • https://cdn.sqhk.co/peporewav/nighaje/live_youtube_subscriber_count_app.pdfIn PDF document text
    • http://bokugoso.22web.org/dakavufaxogef.pdfIn PDF document text
    • http://kodutizaga.mywebcommunity.org/90763419485.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/tokatefozude/dotimasowaxosira.pdfIn PDF document text
    • http://welalakewap.epizy.com/difference_between_normal_and_anomalous_zeeman_effect.pdfIn PDF document text
    • http://lumipanu.epizy.com/62826466280.pdfIn PDF document text
    • http://gukofeverozek.rf.gd/rililibesajevenav.pdfIn PDF document text
    • http://junulobexatini.rf.gd/19472935567.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/a_voidable_contract_may_be_rescinded.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/50122070014.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_off0000fca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA1 5728 bytes
SHA-256: 017e11996a95f473263bda0ab9693804a046c17396fb8043d1bda3cba75b7da3
font_01_sfnt_off00011008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11008 10408 bytes
SHA-256: 536e39bb75842197de5b48b909792be5a6123821085d57f55bd6e0f1e25efa66

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