Malicious PDF — malware analysis report

Static analysis result for SHA-256 1445a677ade3e206…

MALICIOUS

PDF

37.9 KB Created: 2020-08-19 17:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8bb58ecefa02e52f2e1117ab910eb205 SHA-1: 446961fe5e7dd64c4a47ddae1f29248fd0bc15c2 SHA-256: 1445a677ade3e206b0f50bd3b3523e9a088d621d52e00482c71d76e58b36c9a3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to malicious infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains the same redirector URL and a list of other URLs, suggesting a link farm for SEO poisoning or phishing. The ML classifier strongly indicates maliciousness, and the overall structure points to a phishing or scam attempt.

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.ru/pify?keyword=a.+s.+p+full+form+police In PDF document text
    • http://files.brewwber.com/uploads/1/3/1/0/131069915/832800.pdfIn PDF document text
    • http://files.simplystylishfashionblog.com/uploads/1/3/2/6/132681969/falok.pdfIn PDF document text
    • http://nijabep.wooftapetshop.com/uploads/1/3/0/8/130874540/4288289.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/1/0432/7663/2217/files/foxufugibujem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4875/4600/files/kutty_movies_collection_tamil_dubbed_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7098/8196/files/78209732173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/46886478239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/anticresis_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/ink_ball_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4468/4454/files/merge_sort_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6364/0213/files/vertual_dj_7_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/berataxilofisolitajasev.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 1

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_off0000587e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x587E 4972 bytes
SHA-256: fdc65eb01d66d670c3100cfb59d3362d5e66a5c7ad3577db39222807ffd38bf0
font_01_sfnt_off00006955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6955 9848 bytes
SHA-256: 27fbbf202a8bd918e2d536aadb57f589941257955eace32f1f7490f1d0d91249

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