Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7ca2c660154802b…

MALICIOUS

PDF

42.2 KB Created: 2020-08-22 04:22:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86b0992f2b2eeef0ed1b0a06be022176 SHA-1: db844a9dbf184998c3d2d3b2dc79a5ea751d009c SHA-256: d7ca2c660154802bb3cb1060a8802f542ebadcb063ff31ef19dd4d0aa52a3109
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, with a critical heuristic firing indicating it's a malicious redirector. The primary malicious URL, https://ttraff.cc/pify?keyword=best+chord+recognition+app+android, is designed to redirect users. The document body, though heavily obfuscated, contains references to the topic of the malicious link, suggesting a lure to a potentially harmful external resource. The presence of many links to Shopify domains, some marked as benign, is characteristic of SEO link farm techniques used to obscure 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.cc/pify?keyword=best+chord+recognition+app+android In PDF document text
    • http://files.georgesweeneyarchitect.com/uploads/1/3/0/7/130739719/8363314.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/1/0437/1863/9765/files/catalogue_pompe_caprari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4780083199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/xupinerebogabiwodudefir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/38241756952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/rolegopoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0985/8969/files/limbajul_trupului_in_dragoste_allan_pease_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6655/5557/files/77420377246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/hdfc_bank_credit_card_closure_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2761/files/convert_html_to_api_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8220/9698/files/12637033081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/88764499478.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 5

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_off00006751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6751 5352 bytes
SHA-256: f23101df8dcfdcfaf0577046078444fe7bacd1b506ffdc81b5629252b81b99d2
font_01_sfnt_off00007979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7979 9980 bytes
SHA-256: eb0169a195c6e8073ba7f3ad6361b27270d3e641a78167217ef7a012d1da59f7

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