Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1be45b5babd6f88…

MALICIOUS

PDF

53.1 KB Created: 2021-02-25 21:14:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 8d8cf77c7843944584df7dd739defecb SHA-1: 43c22e741daaace712a2c024bd52d6e09d8df39c SHA-256: e1be45b5babd6f887329d51c55980278b38bdebb18a227c4717ca77a5a62cb1b
242 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to disposable hosting, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains keywords like 'Hobart mixer parts breakdown' which are likely used to attract unsuspecting users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8408

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://yafferge.ru/award?keyword=hobart+mixer+parts+breakdown In PDF document text
    • https://lupabarudu.weebly.com/uploads/1/3/1/3/131398308/piwalamu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384316/normal_5ff7abb245173.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/jutedozubutavakabi.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/lasesiwamanuw.pdfIn PDF document text
    • https://cdn.sqhk.co/wupifufexix/idihgiP/olympic_archery_range_length.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/jubomofevotezox.pdfIn PDF document text
    • https://cdn.sqhk.co/samanugutu/1HgcpMX/umc_el_paso_tx_jobs.pdfIn PDF document text
    • https://fewanisip.weebly.com/uploads/1/3/2/7/132712603/xajajib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489593/normal_6023d230ab833.pdfIn PDF document text
    • https://cdn.sqhk.co/risenulowo/cidYhiG/fabajitoxa.pdfIn PDF document text
    • https://zozetaxurumel.weebly.com/uploads/1/3/4/5/134590082/wugalikabezelewikif.pdfIn PDF document text
    • https://cdn.sqhk.co/jategesil/1jhgek4/70744090138.pdfIn PDF document text
    • https://wugarusuxota.weebly.com/uploads/1/3/0/8/130814120/8415716.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369163/normal_6022a541e4fd5.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/nisazozijemidim.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/c1Urhhd/nitov.pdfIn PDF document text
    • https://cdn.sqhk.co/wodelaganav/ehegcgj/gun_sound_song_download.pdfIn PDF document text
    • http://zupitatip.atwebpages.com/nutunuteripebebaxupi.pdfIn PDF document text
    • http://gafodix.myartsonline.com/list_of_best_inorganic_chemistry_books.pdfIn PDF document text

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