Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2b7dc065cba5514…

MALICIOUS

PDF

46.4 KB Created: 2020-08-19 21:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80c24f2bcb4dd23e293b5cd426530563 SHA-1: ff77fc7e23cb7a0be8acbaf6825a1030cbca3caa SHA-256: a2b7dc065cba55146a00a4122ef485e6c5f75b636bbde5b61eee19bacdc70666
162 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous embedded URLs. One of these URLs, 'https://ttraff.ru/pify?keyword=arupu+song++roll+rida', is flagged as a known malicious redirector. The document body, though heavily obfuscated, appears to contain the same redirector URL, suggesting the primary purpose is to lure users to malicious infrastructure. The presence of many links, including those hosted on cdn.shopify.com, indicates a potential SEO manipulation or phishing attempt.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=arupu+song++roll+rida In PDF document text
    • http://ragog.stellarendurance.us/uploads/1/3/1/4/131407995/5671152.pdfIn PDF document text
    • http://files.425sqn.org/uploads/1/3/0/8/130814642/zotazaboma.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/1/0431/7629/6605/files/invention_of_internet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8212/1377/files/66571620184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3810/3962/files/sedeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/bacterias_gram_positivas_aerobias.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3903/8359/files/rokivixezegalobadurivosiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2892/7896/files/pirisawoteju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/antonyms_english_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0599/1321/files/wexizimozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/9470/7095/files/geguzebajebanidez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5600/9111/files/base64_encode_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6048/8350/files/lubefegenumugigafulenike.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 8

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_off00006d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D84 5116 bytes
SHA-256: 1ba8a819f4804d870f01290c50f4feeb99df063d6ccfc2fe7faa79cdcd3ecbe8
font_01_sfnt_off00007ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF5 15136 bytes
SHA-256: c9eb15fcb9112d50cfbae01e8ba7943e7dd389debcfc9629c4c05cb0d27ad9d4

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