Malicious PDF — malware analysis report

Static analysis result for SHA-256 caca9234a41bc4d3…

MALICIOUS

PDF

44.8 KB Created: 2020-07-25 15:44:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 830679c2de9fea53cdf6254c097c51f7 SHA-1: c9b5133b9160ed56741e4a4adce47be1e47581c8 SHA-256: caca9234a41bc4d34a1347c8c43035bbb50d79addd3a35868d856162d5b89480
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to uninstallation, likely a lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or content distribution network used to host malicious or redirecting 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.com/pify?keyword=uninstall+android+studio+ubuntu+18 In PDF document text
    • http://files.kindactswarmhearts.com/uploads/1/3/0/7/130775997/4774485.pdfIn PDF document text
    • http://files.actrunning.com/uploads/1/3/0/8/130873708/gorima.pdfIn PDF document text
    • http://files.coburghighhistorical.org/uploads/1/3/0/9/130968984/runadigi-ruworekopurav-mazesaxe-birerukulebim.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/1/0432/4261/9035/files/wojeruvetosute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/30826095988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3061/8020/files/27545062337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5351/files/12292269271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2338/4219/files/36104203808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/relefubovozefozuwawog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36103472339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7141/3160/files/bedifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/gukivajedexituna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nipexaledova.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 7

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_off00007208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7208 4960 bytes
SHA-256: 5d0a9229e5934e5722d02dd729928a94a74dd12bdff872a719762a0f2462b2c9
font_01_sfnt_off000082dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DD 10392 bytes
SHA-256: 23cab7beb495b0b795b8d3cd4b98d247362c5d40e9e97345585f262ac6796274

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