Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e91a7760c817d15…

MALICIOUS

PDF

100.6 KB Created: 2021-03-16 07:23:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: aa1d4f446e779fc46fda7a3665c427d4 SHA-1: 205d6c70ead1385274a9a872b6199b62c4745172 SHA-256: 5e91a7760c817d159089b488403340458255c7bd9d14bc572194124622ee25ad
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan. Heuristics indicate it functions as a link farm, with numerous embedded URLs pointing to disposable domains. The ML classifier also strongly suggests maliciousness. The document body is heavily obfuscated and appears to contain junk data rather than user-facing content, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9474

Heuristics 4

  • 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
  • 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://resalured.ru/aws?utm_term=el+coronel+no+tiene+quien+le+escriba+summary+english PDF link annotation
    • http://luxasireku.sportsontheweb.net/who_manufactures_toro_snow_blowers.pdfIn PDF document text
    • http://neip-forum.fun/56510746910prt4o.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/wakuv.pdfIn PDF document text
    • http://lubenoredeji.mypressonline.com/benoxuvixobixolotati.pdfIn PDF document text
    • http://tesocoin.online/billiards_pocketless_table8ylai.pdfIn PDF document text
    • http://save50.pro/gunipipibifexobelop0s38l.pdfIn PDF document text
    • https://cdn.sqhk.co/lojegalivo/Nicy0ja/robememomigidaritoxure.pdfIn PDF document text
    • http://wulixiv.sportsontheweb.net/google_adwords_fundamentals_exam_answers_2020.pdfIn PDF document text
    • http://xokezuwadem.mygamesonline.org/babovezuxubugiwami.pdfIn PDF document text
    • https://cdn.sqhk.co/gipagigo/g8HzWKM/zijonubadopowax.pdfIn PDF document text
    • http://ch-redirect.icu/the_chocolate_touch_book_freek62e6.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/8d51917f-79e0-4c6e-8372-253f9264cb19/davuguwadimu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be617473-bbb8-4d40-ad7c-b7831aaa0d3f/59595793628.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/astrology_book_in_bengali_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/203a984a-302c-4e03-b2b2-d8dd9852652f/6904876361.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3379e3d1-cf1a-41f7-ae22-03cc20a9781a/dunkin_donuts_blueberry_donut_nutrition_information.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56e95afb-8e60-42c3-b07a-c9201d41c44c/popewezubiguzerema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6762c3b5-2e26-4131-9f06-ec0e895a4299/guxixeduzitimajisizaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d25dd717-d1ee-4945-aea5-0756c3304e0a/que_es_taller.pdfIn PDF document text
    • http://xowobovu.myartsonline.com/pexibowavomemunasu.pdfIn PDF document text
    • http://solezod.myartsonline.com/24132751440.pdfIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17810 5536 bytes
SHA-256: 514be39254f1e6003ff6859b6dac20c06b6fc42d4cd6df50302519460d255c74

Open this report in the interactive analyzer, or submit your own file for analysis.