Malicious PDF — malware analysis report

Static analysis result for SHA-256 22c147d4ffade6d1…

MALICIOUS

PDF

39.1 KB Created: 2020-08-20 14:11:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dde4984fa564922e3cf8335016fcd799 SHA-1: 04c07fde3930ab7974767dba4c9327e9ee998904 SHA-256: 22c147d4ffade6d1be53cbdba7a9d8536a6d9a5311a7850f80721e71efb99508
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=arioso+piano+pdf'. This indicates the document's primary purpose is to lure users to a malicious site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted, but the embedded URLs and the ML classifier strongly indicate 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.ru/pify?keyword=arioso+piano+pdf In PDF document text
    • http://files.thecentreofthecosmos.com/uploads/1/3/0/7/130776351/6920248ed433.pdfIn PDF document text
    • http://files.childrentoday.org/uploads/1/3/2/6/132681910/minixuzukafokibi.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/1/0430/8264/5665/files/98423801093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/zulowonesipanuzapamonimuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/3184/9128/files/process_skills_in_problem_solving.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3274/6906/files/attention_guitar_tabs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7580/3038/files/gidev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5788/8936/files/95530461308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7071/1958/files/42489937139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53681635306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/72671108649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/togavolizefuzigog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7393/6291/files/fefutawesogidu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4723 4992 bytes
SHA-256: 83f1ecd07cabc63364a87bcee7c7dde5f8f17385de663e52c25ba1db2f8622d4
font_01_sfnt_off00005828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5828 10132 bytes
SHA-256: 85c923309a3e5dbc975f05d50147dc012344c16ee266b49212cb0c207e0e33a2
font_02_sfnt_off00007b00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B00 16100 bytes
SHA-256: b330339415d7fa9c1b652c1fb2a052ec06569061b7b71506ab53161dc9b94742

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