Malicious PDF — malware analysis report

Static analysis result for SHA-256 26650072a7334715…

MALICIOUS

PDF

39.7 KB Created: 2020-08-15 01:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da583a49b2896e772e65883b0894f3db SHA-1: 7116982499d353064bb4a6bec7064c983859331e SHA-256: 26650072a73347150ab62e6a71b0815e7f92bfa6d69af6c870e089d896096aac
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to an 'application form' and includes numerous embedded URLs, some of which are hosted on Shopify. One of the primary URLs, 'https://ttraff.ru/pify?keyword=auckland+institute+of+studies+international+application+form', is flagged as malicious. The presence of a link farm and the invoice lure heuristic suggest a phishing or scam attempt designed to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=auckland+institute+of+studies+international+application+form In PDF document text
    • http://nabefes.mauimadison.com/uploads/1/3/0/8/130815017/kegipowukufufis.pdfIn PDF document text
    • http://files.patriotwastewater.com/uploads/1/3/1/4/131406202/79d844cc1b65c.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/1/0448/2508/4065/files/how_to_copy_on_a_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3590/0569/files/bribery_in_business.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0896/6307/files/77804666005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/woxulebexowifopobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7383/0040/files/action_verbs_and_linking_verbs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/raise_a_hallelujah_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fixasitisajixumazurezeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8245/6981/files/kangaroo_paw_fact_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/5275382561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/talk_bubble_png.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7090/6780/files/wezafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5888/6806/files/78089704635.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 1

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_off00005cdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDF 5356 bytes
SHA-256: c66ab587332235efcfc125ad610113ab1eb041ad2415d434612f3a4b71176a39
font_01_sfnt_off00006efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFA 10136 bytes
SHA-256: fd266775c04d0d3bd13de871b6a72c38426ee741c5b38a36e4de01b96f357304

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