Malicious PDF — malware analysis report

Static analysis result for SHA-256 5544acab833312ac…

MALICIOUS

PDF

41.7 KB Created: 2020-08-17 07:40:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 08256ae23d9394b2c6625d0d16c2da35 SHA-1: 08822bc4f5fd8e469994b501cfdfc11a99b8c32b SHA-256: 5544acab833312acc0d7365782918b381053935230a5418fe271297c24a38e8f
202 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The document body includes a call-to-action phrase, suggesting a lure to click the embedded malicious URL. The primary malicious URL is https://ttraff.cc/pify?keyword=class+6+ict+book, which likely leads to further malicious content or malware download.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=class+6+ict+book In PDF document text
    • http://files.hullabaloomusicfestival.com/uploads/1/3/2/7/132740415/zikomigop.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/1/0434/7484/5858/files/62458357460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/ramulakuxoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1682/0648/files/jumomoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/kobalejimeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4018/6268/files/aurora_3d_animation_maker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0501/6226/files/allelic_interaction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5634/4737/files/ancient_mesopotamian_religion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0632/8985/files/fiwejitu.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_off000067fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FC 4960 bytes
SHA-256: 3ff3119a581d948bda70e8f7c5e33ba0f8230c5e973fc1e828bd5f1f58d4b64d
font_01_sfnt_off000078e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E2 9928 bytes
SHA-256: 182a5f166ef26bd88201f52c27eab590b4bd513573f52e0ea8dd1807e0c48390

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