Malicious PDF — malware analysis report

Static analysis result for SHA-256 17da8d754bc00529…

MALICIOUS

PDF

77.5 KB Created: 2021-03-14 14:03:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 38d41af3ae5f34731fb96da01e83139b SHA-1: 95ef36ef6ffc1b99c155055ebd9affffb1773d6e SHA-256: 17da8d754bc0052955284a115851c046d30712473ec3a7d625319453b61732af
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-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://vilenefex.ru/wix?keyword=autosaver88+catalytic+converter PDF link annotation
    • http://paxabak.mypressonline.com/rajamunewukale.pdfIn PDF document text
    • https://cdn.sqhk.co/jomububorava/hdFLwew/74855026818.pdfIn PDF document text
    • http://cmbmarketing.agency/figure_drawing_referencekb8pt.pdfIn PDF document text
    • http://zesenadozefut.sportsontheweb.net/26913465319.pdfIn PDF document text
    • http://return-0.com/55386354324boblk.pdfIn PDF document text
    • http://islemleriniz.org/viparigerugonujejixavop20xpu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402948/normal_5fcdb6ad5b20c.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/mbidTrr/45793642052.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380536/normal_603ff7377970d.pdfIn PDF document text
    • http://dokakepitizix.medianewsonline.com/what_is_the_starting_salary_for_a_data_scientist.pdfIn PDF document text
    • https://xuzatikanuji.weebly.com/uploads/1/3/0/7/130775198/ligefejabikug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369647/normal_6037fec87bc5a.pdfIn PDF document text
    • https://cdn.sqhk.co/pajijolabalu/CQ4gcvR/the_royal_affairs_game_codes.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/which_is_the_best_software_to_develop_android_apps.pdfIn PDF document text
    • http://martans.space/telabuwejerapuuhdmw.pdfIn PDF document text
    • http://sneakerspapa.store/important_maxims_of_lawnomsl.pdfIn PDF document text
    • https://cdn.sqhk.co/rilixuzewiv/iaieXvN/racing_in_car_2_free_play.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379236/normal_600a5aa5a98e0.pdfIn PDF document text
    • https://fomikozifu.weebly.com/uploads/1/3/4/5/134511133/ec0cf348a8369b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8e12fe21-47c1-448c-af9e-883e7c84523b.filesusr.com/ugd/52ac5e_f89dc849e08f4e908939e1ddcfbad41a.pdf?index=trueIn PDF document text
    • http://kuxubakelixuzot.atwebpages.com/79593628133.pdfIn PDF document text
    • https://5ce19dfa-329f-495d-88d1-e1e7834d9072.filesusr.com/ugd/d902bb_fbf6db583b8947b68e0f68b50cb53033.pdf?index=trueIn 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_off0000f37b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37B 5140 bytes
SHA-256: 593f323951f935eaf97fa49e22aed35989bd173f480d975b3478cdfd704419a4
font_01_sfnt_off00010516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10516 10336 bytes
SHA-256: 581afe8cf33d8511906537441b268c445212a412cbd4f47c83fc97fa8ca63987

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