Malicious PDF — malware analysis report

Static analysis result for SHA-256 d904dba5a3dc94de…

MALICIOUS

PDF

40.5 KB Created: 2020-08-10 23:45:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f83cb7413950e17cdf7266509239c6fb SHA-1: 124a5520e0aee0c9cf1e8e9c291b5c2f3d500daf SHA-256: d904dba5a3dc94de49ef70008d7be6a6e42ae49566fa394d63a2018728829311
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a link farm designed to manipulate search engine results. One prominent link, 'https://ttraff.cc/pify?keyword=online+pdf+to+excel+converter+software+free+download', is identified as a malicious redirector. This suggests the document's primary purpose is to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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=online+pdf+to+excel+converter+software+free+download In PDF document text
    • http://files.ipm-safety.com/uploads/1/3/1/3/131380480/640d5.pdfIn PDF document text
    • http://files.faisslibrary.com/uploads/1/3/1/8/131856646/jisujetade.pdfIn PDF document text
    • http://files.redrabbitresearch.com/uploads/1/3/1/4/131453031/b2a61.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/1/0431/8799/4792/files/15917044276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/76786003377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8649/5396/files/43597844840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7990/1079/files/77130234942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73807437975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/litabujejamopakaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5644/8167/files/1550630643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84407481133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/vupalonelezuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/65075923862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/remove_crackle_from_audio_audacity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/gimewuvasexogubitovogupew.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 3

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_off00005f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F28 5396 bytes
SHA-256: 779476d01533b27ebfb00631df46ce1f5260b9d9ce7ec6f1700eebe30a9a03b6
font_01_sfnt_off000071a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A7 10484 bytes
SHA-256: 846a07d74916f606d0b4d9a813900d64dfa3250699d07dc95d5ac8d18daf1fb2

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