Malicious PDF — malware analysis report

Static analysis result for SHA-256 510761e84c97ab00…

MALICIOUS

PDF

44.0 KB Created: 2020-08-19 20:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3055611a4d3c72d81cd8c19bfc20de67 SHA-1: e1d06f61161784dd447f2b4e7552a25935081821 SHA-256: 510761e84c97ab006d4079c28de50d1d4cc811e1131e95241e3b577bcef8efb5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=format+sd+card+ubuntu+command'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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=format+sd+card+ubuntu+command In PDF document text
    • http://zinexepa.samluangkhot.com/uploads/1/3/1/4/131437657/3924937.pdfIn PDF document text
    • http://files.chicodoulacircle.com/uploads/1/3/0/7/130776407/fomer_xowuzafiveb_rowilagev.pdfIn PDF document text
    • http://vewil.damianmorriscoaching.com/uploads/1/3/0/7/130740221/5619186.pdfIn PDF document text
    • http://files.aispng.org/uploads/1/3/1/3/131398008/bozekogoxerunin-jonebegeweluz-bopeb-goxovan.pdfIn PDF document text
    • http://xazidelug.preppantherplace.com/uploads/1/3/2/3/132302868/1542293.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/1/0430/0088/9507/files/wovurejotib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8702/7605/files/android_messages_linux_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9908973296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/39448360893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0968/7208/files/19405402849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9779/2415/files/rubip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9113/1554/files/biledolewodamabogidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/6475412781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1557/5464/files/guwuvom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/24309862813.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_off00006c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C82 5148 bytes
SHA-256: 84cef53424ba3d98fa95d288e3eee3bbf5546d55360fd43581492933b8a8bc78
font_01_sfnt_off00007ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDF 10804 bytes
SHA-256: 459ed3a84c6429de826ed07d0a2e6b57005b56a30e8df648a3ad6a67fe3ceccd

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