Malicious PDF — malware analysis report

Static analysis result for SHA-256 115275e51570091c…

MALICIOUS

PDF

41.1 KB Created: 2020-08-21 14:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc114cb94dc4885e57824393f8c8dbb2 SHA-1: f880a214ecee01eb7a1ad2b813e4fdc52403a626 SHA-256: 115275e51570091c62203cf458c246e6ffd51c8e45c96c4b4976ad7c7bd62c4c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service that ultimately leads to malicious content, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The document body and embedded links suggest a lure for free downloads, likely a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and link farm indicate a malicious intent to redirect users to harmful sites.

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=gta+sa+cheat+menu+mod+free In PDF document text
    • http://files.longmontsistercities.com/uploads/1/3/2/6/132695280/8747764.pdfIn PDF document text
    • http://files.no-clout.com/uploads/1/3/0/7/130775635/zenonifilarut.pdfIn PDF document text
    • http://zinogefi.lindatully.com/uploads/1/3/1/4/131437987/7208716.pdfIn PDF document text
    • http://govisatos.digitalpreschool.com/uploads/1/3/0/9/130969744/3336511.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/1/0428/9835/8432/files/rejupabofutub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/bawizidezejiweruvotutazub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45484104345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0499/2408/files/geophysical_survey_for_groundwater_exploration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/84845346207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6100/9818/files/jemumufefabowuwifigow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/all_souls_trilogy_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kafojisiguzisov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/69985142728.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 2

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_off00006260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6260 5260 bytes
SHA-256: 4ec5e37c964f0ecf91604b96792b6baf925a6cfc2afe7c6ab2040994c8e1f942
font_01_sfnt_off00007418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7418 10356 bytes
SHA-256: add918f451f9eac7d464a4a34957a4db4df81f3b2a8cba59edfd9c7c5f4aa0a5

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