Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f60a846fc61d761…

MALICIOUS

PDF

87.3 KB Created: 2021-04-03 23:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7a912cb8e1dcc9b30c2b8f3118bfe870 SHA-1: 8fd74306571cbebe4304a68ede9a9e11d19b1992 SHA-256: 7f60a846fc61d7615780c2bbdb23fb396fcad083c902efbd8fb0ae0308088542
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 0.9997

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://jacksth.ru/wix?keyword=springfield+train+show PDF link annotation
    • http://milanbeachs.space/sipemumoxofotog3omh0.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/fjegekV/riders_in_the_sky_tv_series.pdfIn PDF document text
    • http://expressvpn.store/gugikoregugebitesekubotux0bgzl.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/jDYieid/prop_hunt_unblocked_games_99.pdfIn PDF document text
    • http://smirno.life/521964530799xsmb.pdfIn PDF document text
    • http://kojijeku.mygamesonline.org/25765041993.pdfIn PDF document text
    • https://cdn.sqhk.co/fesoxuleri/jivPFwO/fruit_bubble_tea_calories.pdfIn PDF document text
    • https://cdn.sqhk.co/jalizovi/gcCVigc/thriftbooks_reviews_indeed.pdfIn PDF document text
    • http://wuxemit.iblogger.org/goalkeepers_with_most_clean_sheets_in_europe.pdfIn PDF document text
    • http://bupro.asia/the_book_of_life_2014_movieunw8c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b3e62e3-cfe4-4c10-957a-b2a56b35799c/sword_fighting_techniques.pdfIn PDF document text
    • https://79d86aa2-23c4-4aa0-a0dc-c16ac59ae55d.filesusr.com/ugd/ecb701_defde84bb6cd4658a8f3151df19e3bc1.pdf?index=trueIn PDF document text
    • https://f1c0478e-57b3-422a-b8eb-433964b677d2.filesusr.com/ugd/16c17d_0528085e62914ffca4ae5347217611ab.pdf?index=trueIn PDF document text
    • http://zegiwewezenaro.myartsonline.com/mujenekasunilo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b05841e-7b8d-492f-b2ae-cf09aedf6614/is_the_wave_a_real_story.pdfIn PDF document text
    • https://6363ce23-9394-4102-a476-7be320345719.filesusr.com/ugd/7c41c1_6d6fc3bfec8f44dc88c7407065c09f0f.pdf?index=trueIn PDF document text
    • http://ladisopezaxak.epizy.com/51009182184.pdfIn PDF document text
    • http://tanonarimunal.myartsonline.com/tegarujanimovozaduzi.pdfIn PDF document text
    • http://xefokezutuvij.epizy.com/70775281792.pdfIn PDF document text
    • http://fasokefukolu.epizy.com/skype_launcher_old_version.pdfIn PDF document text
    • https://e1ca4115-fb55-43f9-84f1-eaf814f8c83f.filesusr.com/ugd/18122d_ee45da145cba4c14a15117a82f4b2777.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_off000117f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117F2 5500 bytes
SHA-256: 6d89969a988931519bbf11cec27827ea2f6dd8929c71e2a0d4bfe488ca24497f
font_01_sfnt_off00012ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB4 11056 bytes
SHA-256: 6a6a712d50bfcbd3c23651e1dcababbbb598d090d733db7f8bbe49a6569bace3

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