Malicious PDF — malware analysis report

Static analysis result for SHA-256 55ff72b60686e508…

MALICIOUS

PDF

33.9 KB Created: 2020-08-05 13:30:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7167c506a695effec670856a0417efbf SHA-1: 2956c52f3ec5a9a2fe5d45943d0fbf8c3d70c783 SHA-256: 55ff72b60686e5084684273ad5477f80e3825d2d7794fffa6020d77af6f8b19a
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of numerous embedded links, a significant portion of which lead to a redirector service at 'ttraff.ru'. This suggests a phishing or scam campaign aiming to lure users to malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on Shopify, indicating a link farm strategy. No scripts were extracted from this sample.

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=english+test+basic+pdf In PDF document text
    • http://files.amomentonthelips.co.uk/uploads/1/3/0/9/130969700/wekosinuxolo.pdfIn PDF document text
    • http://files.yourspeechroom.com/uploads/1/3/0/7/130740551/d279e4639f83d8.pdfIn PDF document text
    • http://files.angiecoyle.com/uploads/1/3/1/6/131606169/0329169d16a2.pdfIn PDF document text
    • http://files.thehappymeetium.com/uploads/1/3/1/4/131453455/rutafapedov-ropogoradike-doxezajabe-bezipupi.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/1/0434/0203/5351/files/38050023670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2819/9062/files/45390285998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sarozasupevukofapunaxovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52135332303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2368/7067/files/99022928869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5523/files/40339364778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/91384984063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/35634316375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2290/7554/files/36466212911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/dekarepuwozewiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/3404793926.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 4

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_off000047dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47DC 5420 bytes
SHA-256: c28303622bdb622c0b324f16d4955e9edda78be14eefd79a20467702657a9154
font_01_sfnt_off00005a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4B 9544 bytes
SHA-256: f1821937d3ad4667c05aa79a6a651d647393f71ba831914ee00182c8391e295f

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