Malicious PDF — malware analysis report

Static analysis result for SHA-256 d13b11fb083da141…

MALICIOUS

PDF

44.6 KB Created: 2020-08-19 04:07:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0f62023cb8390c3a8929046ed2b630c SHA-1: 353a59fc647dce62b51551222d1e6a278ddb1d1c SHA-256: d13b11fb083da141abbdce46c0d90c10a51f7663222bb9f6a6ef2dd991f1d8b2
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on domains associated with link farms and redirectors. The primary malicious link, https://ttraff.ru/pify?keyword=school+uniforms+canada+pros+and+cons, is identified as a malicious redirector. This suggests the document is designed to funnel users to malicious infrastructure under the guise of providing information or downloads.

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=school+uniforms+canada+pros+and+cons In PDF document text
    • http://files.sallybrownkatemorris.co.uk/uploads/1/3/2/6/132695200/gumupamu.pdfIn PDF document text
    • http://files.outofthedarknessgriefsupport.com/uploads/1/3/1/3/131398449/152638.pdfIn PDF document text
    • http://mofiv.kindredmassage.com/uploads/1/3/1/3/131380429/e445cb61696.pdfIn PDF document text
    • http://jodozopew.jaalico.com/uploads/1/3/1/4/131454012/lovosu.pdfIn PDF document text
    • http://files.michaeliskowitzart.com/uploads/1/3/0/8/130814066/mixevumuk.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/1/0433/5868/3291/files/fundamentals_of_plasma_physics_bittencourt_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4130/0380/files/semud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1554/4737/files/bowditch_rule_and_transit_rule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/algebra_2_equations_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0745/1042/files/50115292367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0577/1939/files/9723732738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/sonic_express_labler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/13016907835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6285/3794/files/raduzuzepufojanuzabirimuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9921/0407/files/boselemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4062/8136/files/sogoruvatodiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5526/6457/files/articles_of_association_notes.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F43 5500 bytes
SHA-256: 51e8310720477ca547d0b4d0e487191faaffbe7eedba9d6547cffbfb351ec0ae
font_01_sfnt_off000081ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BA 10372 bytes
SHA-256: 22e6f56fcdc54646034434d950567304be152e8f439ab6bec5c61348689ce3b9