Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae6a4b783a3983b…

MALICIOUS

PDF

78.6 KB Created: 2021-03-23 12:23:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f1abc8a4b2fe281ce293b3a0156f364e SHA-1: 9de807c9889b0713f74ba50be57e869c569c197e SHA-256: 9ae6a4b783a3983bb5e46797960321aea5ea73d00a9ea049c137fb7187c087ab
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 0.9995

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 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://xezojetit.ru/award?keyword=free+cessna+337+service+manual+pdf PDF link annotation
    • http://bosnoslovnoejelaniekupit.xyz/feganorosigedogenonesbgq3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477629/normal_6023c9d2dec6e.pdfIn PDF document text
    • https://kivenawuvu.weebly.com/uploads/1/3/1/1/131163776/4d1fd5b61794.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_602d2afa70484.pdfIn PDF document text
    • https://kodabovoxalomas.weebly.com/uploads/1/3/5/3/135340354/tekirujikol_wutapedesaxo_gabilijelam.pdfIn PDF document text
    • https://fofifakexetag.weebly.com/uploads/1/3/4/3/134345684/gekugemesufisuz_wolemaxavaxom.pdfIn PDF document text
    • http://moscowflowers.shop/322980652778l25e.pdfIn PDF document text
    • http://shoppermarket.online/solimefabihwei1.pdfIn PDF document text
    • http://pukegowavoja.iblogger.org/alu_alu_blister_packing_machine.pdfIn PDF document text
    • https://nofixemi.weebly.com/uploads/1/3/6/0/136082439/xipowasum.pdfIn PDF document text
    • http://instapriz.site/90201241247c0swd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374021/normal_6006db4a02a2e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://peworesafasar.epizy.com/the_art_of_styling_sentences_5th_edition.pdfIn PDF document text
    • https://02408c19-b9f6-4996-a596-1d5b7e46c8d3.filesusr.com/ugd/c83fdb_67f5343c017248b2aaa63fde4f42a839.pdf?index=trueIn PDF document text
    • https://6d4cd3b7-91e9-43ac-92b9-205473f1e50d.filesusr.com/ugd/28146e_5bb9c97d1b9849fbb313bc75f5202f14.pdf?index=trueIn PDF document text
    • http://muriporufulov.epizy.com/air_cooler_catalogue.pdfIn PDF document text
    • http://desebavufix.rf.gd/45168140655.pdfIn PDF document text
    • https://e2604e0b-f95a-4acb-b53f-a7db3827b2a1.filesusr.com/ugd/225520_1edb48be35814c99bf93b0a3eb19d762.pdf?index=trueIn PDF document text
    • http://nudewewupapu.epizy.com/download_driver_hp_laserjet_p1006_windows_10_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0304ac4f-50ec-475f-a8bc-e263859605f8/nonokexi.pdfIn PDF document text
    • https://ae8c1479-5121-4009-b0ed-8259dbb1205b.filesusr.com/ugd/0aff45_31f383e36f0c4f3ba45c3e2f4eb21d36.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e62b918-a7ae-4a69-8823-09878aa8deb2/char_broil_big_easy_recipes_chicken_thighs.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BF 5252 bytes
SHA-256: a1d1e0476a987fbfedce6de42818b8fb552f3ba56fb132c3aec9c2223bb8b32b
font_01_sfnt_off0000f783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF783 11200 bytes
SHA-256: 6adf748b655cdfe872bf321c5add02f31b897d349c54b75af3a1c450461c52ad
font_02_sfnt_off00011d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D51 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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