Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c779075c3656d95…

MALICIOUS

PDF

33.4 KB Created: 2020-08-21 17:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 185bde4b859eb3f7404ed776ec50c73c SHA-1: deeece941678b1240167a67e46f316dcdbbc1d4c SHA-256: 5c779075c3656d9562f130251eb60a2cf056404bc1b7ba3ef8f120784e741a4e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=adverbial+phrase+worksheet+ks2, suggesting a lure to download further content. The presence of many Shopify links, some benign and some pointing to the redirector, indicates a link farm strategy to distribute malicious content.

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=adverbial+phrase+worksheet+ks2 In PDF document text
    • http://files.vikingsoul.net/uploads/1/3/2/6/132682883/5552050.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/1/0433/0127/3760/files/biology_booklet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0456/8498/1919/files/bhutan_visa_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/54087120235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7750/7999/files/wimezozebofed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xakikalimakimoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/12078427401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2516/5470/files/tosabexerofij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5975/6708/files/tidisuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9209/0784/files/buberodigefowalukevuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6461/4303/files/vitogenafavaninunixap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/garekivuzenederopul.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 2

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_off0000460f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x460F 5524 bytes
SHA-256: f6c7b679b0e6a7420ecae8ff12e70433e92b91dec683fa578016f3beec6458b1
font_01_sfnt_off000058de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58DE 9416 bytes
SHA-256: ba4d1bc893f91d137ce2356b9d8b1a7b8fae52ae40d96a8aeec0c5d266901776

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