Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8ad6123d482369a…

MALICIOUS

PDF

76.8 KB Created: 2021-03-10 14:09:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 06252e4f0803b5a67ee31577dbf1fa5d SHA-1: 6ebb2219c5064506daa37184786a6a93b077f656 SHA-256: e8ad6123d482369aee741a4fe2265cd18529ecff64a6ec6e347e39ee1591c109
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 0.9996

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://fokemale.ru/award?keyword=blender+beginners+tutorial+pdf PDF link annotation
    • http://jiwabozaxexe.mypressonline.com/mominimiripebofedex.pdfIn PDF document text
    • https://xazepobuzu.weebly.com/uploads/1/3/4/5/134582826/kerisiduduposo.pdfIn PDF document text
    • https://cdn.sqhk.co/bobofibu/UP6ii5n/zewozarugujota.pdfIn PDF document text
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/femujoxitomoban.pdfIn PDF document text
    • http://puxefesezosowej.22web.org/what_is_capital_budgeting_discuss_its_importance.pdfIn PDF document text
    • http://kolagozisil.mywebcommunity.org/18864711550.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/how_to_remove_a_ridgid_shop_vac_filter.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/raxalunu.pdfIn PDF document text
    • http://vivekawiga.sportsontheweb.net/3083507288.pdfIn PDF document text
    • https://cdn.sqhk.co/jivaduzar/xPzjjgg/wurenutipuwaburupebosef.pdfIn PDF document text
    • https://wiwanozamo.weebly.com/uploads/1/3/4/3/134306351/movibaduw.pdfIn PDF document text
    • http://paguwob.22web.org/suwoguwow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xemigososefof.atwebpages.com/the_vampire_diaries_season_8_episode_8_watch_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e55345e-c167-4941-9a96-666ea60f521d/church_of_christ_christmas_sermon_outlines.pdfIn PDF document text
    • http://zolefirujiwi.rf.gd/aranjuez_guitar_tab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24d9a437-2897-4b9a-8135-473ffebf0b2e/38885561046.pdfIn PDF document text
    • http://kodigejo.rf.gd/arte_classica_grecia.pdfIn PDF document text
    • http://bizedesaxifu.onlinewebshop.net/how_long_does_a_kindle_oasis_battery_last.pdfIn PDF document text
    • http://xigutawime.epizy.com/everfi_answers_module_6_your_financial_future.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/036828c2-edab-4b4f-a7e0-079d8332d93e/life_together_in_christ_book_grade_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba81b8eb-117e-4fba-93f6-125a471c134d/pusoveliloguxifokevix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/000f684b-1fda-40cb-a694-5021ca4f553d/rafavuvigiwiwogibebi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF038 5396 bytes
SHA-256: 13edd173ec22f7f128707ddd59f8bbd1b0eeab5fecf1e49bf968688956b93878
font_01_sfnt_off0001029f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1029F 10304 bytes
SHA-256: 9bc8960df53f974b7e54b8544d59c45ba8c9286f78d1e6e50af4af6621fcbbc5

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