Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7bb66b5838e03a…

MALICIOUS

PDF

38.1 KB Created: 2020-08-22 09:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 972a6e3bd6cdf85713ea9ee71a6d2c0a SHA-1: 9c691081394163401ba2d6f13fc19be49e2b8297 SHA-256: 3e7bb66b5838e03aa7a773f94e1b8abc0d033426cc82af6635fcd95aa5ef7a12
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. The ML classifier also flagged this PDF with high confidence. The primary intent appears to be redirecting the user to malicious infrastructure.

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=m%25E1%25BA%25B7t+n%25E1%25BA%25A1+fresh+snail+mask+sheet In PDF document text
    • http://dololuvur.shift-vibes.com/uploads/1/3/1/4/131412032/fapamapawaf-mufugilito.pdfIn PDF document text
    • http://files.swlar.com/uploads/1/3/2/7/132710569/07666bf9519f3.pdfIn PDF document text
    • http://files.haltapes.com/uploads/1/3/0/7/130775504/bopidipis-xeber-punolav.pdfIn PDF document text
    • http://dirurorob.artartmargaretcameron.com/uploads/1/3/0/8/130874565/waxaro.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/1/0435/4647/6708/files/surareloti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2744/6435/files/brew_install_node.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0147/0366/files/vimaneze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/balarama_mayavi_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/90810502237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4695/2351/files/definition_of_office_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/ramizigafuvoladug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/2119/9516/files/ambasamudram_ambani_video_songs_hd.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 8

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_off0000570f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x570F 5584 bytes
SHA-256: 1e727e1d02176bd072395cf7edecb2bcfdf3e446c5451d9b35363dd4df98030f
font_01_sfnt_off000068b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B0 9764 bytes
SHA-256: 38967a796abada54bc22f7c6faf51e0cf5bffdb78943d34902b606d354c23ffb

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