Malicious PDF — malware analysis report

Static analysis result for SHA-256 855533de2784f514…

MALICIOUS

PDF

44.0 KB Created: 2020-08-22 20:07:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e02a830bd2daaad49088e0d856bedd97 SHA-1: 8fc944d10a928a69e00c040fe738e5ff69a6cb44 SHA-256: 855533de2784f5140458466897f3243cb1b907747f033c912af97d266b4dac65
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'automated guided vehicles future' and a URL pointing to a redirector, suggesting a phishing or SEO spam campaign. The presence of numerous external links, many pointing to Shopify, indicates a link farm strategy. The ML classifier also strongly flagged this PDF as malicious.

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=automated+guided+vehicles+future In PDF document text
    • http://files.bluecanyonceramics.com/uploads/1/3/1/4/131437363/6417f5025.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/1/0432/9553/9368/files/97855589184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7365/0334/files/righteousness_of_god.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8488/9758/files/fopune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3135/5807/files/feroz_ul_lughat_arabic_to_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/pixakogoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6787/5221/files/bls_basic_life_support_provider_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4856/6941/files/22107561272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0146/2436/files/40059665862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7861/4168/files/22522655471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/cementum_caries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/geloxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3555/0118/files/22632690648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65529241957.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_off00006b07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B07 5484 bytes
SHA-256: ece6e93f73a571d4f1b6f0c0d42b066e502aabb3b366240f7e14fb1906e5377b
font_01_sfnt_off00007d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D90 10868 bytes
SHA-256: 5f53bfedd16f3cefb000bc818585eb8a0879edc72d1a80db1ce26e7466495ebc

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