Malicious PDF — malware analysis report

Static analysis result for SHA-256 4683e85106668a4d…

MALICIOUS

PDF

64.5 KB Created: 2020-08-08 02:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69f479967c5a6020822ca44a83b2dcf2 SHA-1: a3284c00dab5c9ed79acd3dc3b27f6927a0115f5 SHA-256: 4683e85106668a4d817b04daf46d2c486b900ada2cbeb100a8040075463ed811
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as 'geometric progression notes'. One of these links, https://ttraff.cc/pify?keyword=geometric+progression+notes+pdf, is identified as a malicious redirector. The document's primary purpose appears to be to drive traffic to this malicious URL, likely as part of a phishing or malware distribution scheme.

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.cc/pify?keyword=geometric+progression+notes+pdf In PDF document text
    • http://files.diversityserves.org/uploads/1/3/1/4/131454899/835dc4447.pdfIn PDF document text
    • http://files.yurrugar.com/uploads/1/3/1/4/131453132/binikidapo_putavaf_pimititipidijun.pdfIn PDF document text
    • http://files.themagiciansindicator.com/uploads/1/3/2/6/132681384/b8eaf34186cf7.pdfIn PDF document text
    • http://files.marydanroth.com/uploads/1/3/1/3/131384771/340cfc127.pdfIn PDF document text
    • http://files.jasperlonestaryouth.com/uploads/1/3/2/6/132681426/lebesu.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/1/0430/2936/4889/files/vumigivamufun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/97500650507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/magaduwuzeloferibifarema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/tudekisodimewan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7253/4166/files/bug_out_bag_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/48161504822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1062/8511/files/ponefuzege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5473/4241/files/21159036613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6001/0906/files/91405520214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1131/7658/files/jigigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5122/9089/files/77467997412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/agenda_escolar_2020_20_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/delete_all_favorites_on_twitter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9777/files/46390483853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/piridemur.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99D3 5264 bytes
SHA-256: 42461a438989b9df327bd4e72c74f253e873f70ab647a954278ea02e4a63885f
font_01_sfnt_off0000abb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABB4 15972 bytes
SHA-256: a433a612e2e0d2c5e19f8e220d289daa9f530c9411bf5acef84489e20b538ac5
font_02_sfnt_off0000de72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE72 16296 bytes
SHA-256: 44def9dc674df610fe41fc9db42784bba342d5f677e4986274feae7507f0d963