Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c705f2013d76b8…

MALICIOUS

PDF

32.8 KB Created: 2020-08-17 18:44:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49637fc92f7b4a078745bb4b270900be SHA-1: 4d466ba9e2109e97b66445d36c377bff178eb67c SHA-256: a8c705f2013d76b885d32103b241bbfc0c10e426f47a3c0ef5933d3bcef5435c
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, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a direct link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same lure text and URL as the malicious redirector, indicating an attempt to drive traffic to malicious infrastructure.

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=the+gabby+douglas+story+free In PDF document text
    • http://tasema.trappecreekphotography.com/uploads/1/3/1/8/131872225/6003229.pdfIn PDF document text
    • http://sininab.johnychang.com/uploads/1/3/1/8/131856408/wemifetadupakos.pdfIn PDF document text
    • http://files.neflopioidepidemic.com/uploads/1/3/0/8/130874201/bupotupinubapamijosa.pdfIn PDF document text
    • http://joner.scorpiontv.us/uploads/1/3/1/4/131482995/2a93f.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/1/0430/0043/0746/files/96869898010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/zebumum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/negemidifarosugem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5552/1695/files/forge_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1806/2746/files/dead_poets_society_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3460/5725/files/74594043441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/levolexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5319/4133/files/64993758835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5812/5207/files/pusupuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/roxumadakemibelet.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 1

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_off000042d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42D7 5360 bytes
SHA-256: 6e0967e14f39a7ca5403548cedd166169fc06a9060772333e113f9c8a960b39a
font_01_sfnt_off0000550c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x550C 9832 bytes
SHA-256: f7e3c3d34db8103359b248bc15067fdc2b35b79e354459807709794c6ecfac18

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