Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e8595b850a462de…

MALICIOUS

PDF

43.5 KB Created: 2020-08-08 22:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b015ffaddf73a92c6e41f4025b169c90 SHA-1: 76625abc44a2b63401ad820995aa02ecf525e269 SHA-256: 8e8595b850a462de42cafd572762c32f4a89f87cb62f43cba4335656a918302c
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, which is also present in the document body. The document body text, though partially corrupted, indicates a lure related to 'debit voucher format pdf'. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=debit+voucher+format+pdf In PDF document text
    • http://ririsutes.rockyouthministry.com/uploads/1/3/0/7/130776485/ralibobozemerezusa.pdfIn PDF document text
    • http://files.hd-crafts.com/uploads/1/3/1/0/131070207/64caea4c1b4.pdfIn PDF document text
    • http://files.spittpassion.com/uploads/1/3/1/8/131871518/4c4ff.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/1/0430/3549/2503/files/9376502656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76410179135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5626/files/tuvapotenatazafeka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/surolatepuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2344/8736/files/27588602341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/vivezoxaxuvowukemawuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6389/2376/files/76343293233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8817/4497/files/71265085890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/38865438518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4658/4999/files/gubumifogilopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/nolezogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5542/4423/files/83608107334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2285/9944/files/xelamowuponuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6183/7981/files/74071721627.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_off00006b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B76 5384 bytes
SHA-256: 469a48676c20531fe5b2468995913794c98614824b29eb2523752d1ff53ca328
font_01_sfnt_off00007da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA3 10472 bytes
SHA-256: ab1e8514f345a82235217e94b5c8d082f9ea982ad87a97675a765246f1f33bc1

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