Malicious PDF — malware analysis report

Static analysis result for SHA-256 54d8ddbdfbab4a7c…

MALICIOUS

PDF

39.8 KB Created: 2020-08-01 10:37:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6699b5c2ce6f597267486252e9a6612a SHA-1: 3c15110c017429ee0f3bf7f2b21cdef9cde9aa33 SHA-256: 54d8ddbdfbab4a7c01a921237db4ddf256b3e832e71aeb042336cd52dd7bec2e
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing indicating a PDF link farm. One of the primary links directs to a known malicious redirector, suggesting an attempt to lure users to malicious content. The document body itself is largely obfuscated but contains references to the redirector URL and benign-looking Shopify URLs, likely used to mask the malicious intent.

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=1nf%252C+2nf%252C+and+3nf+are In PDF document text
    • http://files.twolittleducksdesignstudio.com/uploads/1/3/1/6/131606638/0624a4c8169.pdfIn PDF document text
    • http://files.dhendricksonphotography.com/uploads/1/3/0/7/130739368/nuwowulijudeti.pdfIn PDF document text
    • http://files.functionloops.com/uploads/1/3/0/7/130740255/zuvupak.pdfIn PDF document text
    • http://files.allhandscreate.com/uploads/1/3/1/3/131398268/sikofesivusowebanedi.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/1/0437/3122/2682/files/13239505242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3627/files/stardew_valley_spawn_items.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6280/2070/files/4704061189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5572/6238/files/19730658642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5598/6341/files/tigapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/taguzavinipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5615/1190/files/osrs_f2p_range_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/19114058830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9065/6924/files/See_https_devcenter._heroku._com_articles_buildpacks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/xisixagunetununapabok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1664/0919/files/vetene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/83459596064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/vetibexuw.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_off00005e82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E82 5000 bytes
SHA-256: e51234e4cf47d0afe5af91288bbef8ea1420a81941a3cb955813e4f1ee71b1d7
font_01_sfnt_off00006fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA3 10260 bytes
SHA-256: db1cf3fb3b6eb9f083b7030424ace9df13f59d4be96763e54b58ba9c288b358c

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