Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ae61a27922f96d8…

MALICIOUS

PDF

45.4 KB Created: 2020-08-17 02:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 22e9ea2dce43e8242d7d96343ff6ede5 SHA-1: a1b5f4b24ad24f1dc16d5ec7b02bc4a3361e57f4 SHA-256: 8ae61a27922f96d8551a3b1374f05d54d6fe0992a2931d122819016c68d5e14f
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains hosting other PDFs, which is characteristic of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which likely serves as the initial stage for delivering a malicious payload. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the link farm and redirector strongly suggest a phishing or malware distribution attempt.

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.cc/pify?keyword=how%2527+s+your+day+best+answer In PDF document text
    • http://files.viewpulsar.com/uploads/1/3/1/8/131856234/rezagewubiba-wituseta.pdfIn PDF document text
    • http://files.prima-ef.org/uploads/1/3/0/7/130739945/5868d927.pdfIn PDF document text
    • http://files.jesslandequestrian.com/uploads/1/3/0/7/130739918/5280386.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/1/0430/1992/7713/files/defusuwewudoxasif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5020/4327/files/juribo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8833/7313/files/76985837319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/0012/9704/files/acunetix_web_vulnerability_scanner_12_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1739/5611/files/32953488663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8295/7478/files/24093521944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/99039211352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3423/0429/files/97696159012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2425/2055/files/79334428856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/36233662115.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 5

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_off000074f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F8 5116 bytes
SHA-256: 567ac4cbfeabdc988476263fcefc77853274f5fa89793cce6a0058e55d529eb0
font_01_sfnt_off00008681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8681 10132 bytes
SHA-256: e49b411cf595ff0e1b41c01e26068589fefb7acebed172ff194da28971624820

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