Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d772c1d94ba5419…

MALICIOUS

PDF

39.3 KB Created: 2020-08-12 06:38:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b7a936f2f3dd380f6520e5a59a30b26 SHA-1: 942078cf42135bac62e220481e13b87f293db778 SHA-256: 9d772c1d94ba54192ba14d589ea68c2e3e6f732678ce27067d357ec251223df0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=modul+belajar+bahasa+korea+pdf'. It also exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same lure text and URLs, suggesting a phishing attempt to redirect users to malicious content under the guise of educational material.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.com/pify?keyword=modul+belajar+bahasa+korea+pdf In PDF document text
    • http://files.blaearlychildhoodcoalition.org/uploads/1/3/2/6/132682768/379eb9495e8.pdfIn PDF document text
    • http://files.notbysight.shop/uploads/1/3/1/4/131453823/jemekarejet-jeloronorabugu-nulazezawen-mazitebineni.pdfIn PDF document text
    • http://files.thunderbearwoodsmiths.com/uploads/1/3/1/0/131070098/6206467.pdfIn PDF document text
    • http://files.elsafuria.com/uploads/1/3/1/4/131453333/sudipozafavuda_dovixuzuwo_fanomo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/73111418190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4809/0270/files/vitulerezagufomotab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/kofejoniwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1181/6099/files/apollo_tyres_annual_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3898/8709/files/26690094965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1713/files/5741886033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5468/6630/files/basic_electronics_books_free_download_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3399/2085/files/carnatic_music_tamil_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9278/5818/files/e_squared_pam_grout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7141/3155/files/64258988331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5335/6955/files/bazol.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

Related samples 6

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_off00005d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6F 5412 bytes
SHA-256: 8bd7283bd66e384c838f51822044ede3bab6ec1c075a025bad5f4f97a841736a
font_01_sfnt_off00006fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD8 9536 bytes
SHA-256: 1376325aa3d0c3a2e6d4a580a2f9227b3aea357b746be8f836da64f9ec482beb

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