Malicious PDF — malware analysis report

Static analysis result for SHA-256 58758f213e3f491f…

MALICIOUS

PDF

41.3 KB Created: 2020-08-04 09:30:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 45ce80669469b68b588653d21951f65b SHA-1: 1a8de9f428c29ad90d0ed87e5f6a2b75f0acd33d SHA-256: 58758f213e3f491fdc91190d9e5856f25d7e4f29b8d120f3a0fad945d97a0343
194 Risk Score

Malware Insights

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

The PDF document contains a mass external link farm, with a primary malicious redirector URL embedded in the document body. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link https://ttraff.com/pify?keyword=comment+r%25C3%25A9unir+plusieurs+pdf+en+un+seul+avec+adobe+reader leads to known malicious infrastructure. The document body text, though partially corrupted, also contains this URL and appears to be a lure for users seeking to merge PDF files.

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=comment+r%25C3%25A9unir+plusieurs+pdf+en+un+seul+avec+adobe+reader In PDF document text
    • http://files.sustainableartschool.org/uploads/1/3/1/0/131070485/2332046.pdfIn PDF document text
    • http://files.pandalyllc.com/uploads/1/3/1/4/131408172/bogetisijubaso.pdfIn PDF document text
    • http://files.boutsandbows.com/uploads/1/3/0/8/130874431/ccdf1131aa7.pdfIn PDF document text
    • http://files.goldeninnervision.com/uploads/1/3/1/3/131398052/8017279.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/1/0432/1024/4256/files/kobalt_40v_string_trimmer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/busutes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3956/2651/files/kazezape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3805/6354/files/19033644259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/58066020278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/dirumisawudogore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6436/8021/files/zip_code_cape_coral_fl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nitupalakisotubawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9619/3686/files/lujugifilubizinilagisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/16305390845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3456/5025/files/71573032440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/84017954917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4635/4594/files/77192129601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/savopenijuwumilidogijop.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_off00005da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA7 5548 bytes
SHA-256: 39e223b649dcb31d4f96439c6e898174ed1148901b0e8cd5302c59e80d04cc7f
font_01_sfnt_off00007027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7027 11600 bytes
SHA-256: ae631a44e76cf87f0eb947591a1fb3c6c5d7341e2a63155d55b78f924d99eeed