Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb375f885079a1aa…

MALICIOUS

PDF

53.7 KB Created: 2020-08-26 14:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5581bf3f1f1189782bbfad7e12ec1655 SHA-1: 71b682cebcc75a168807a533654f4bcd703e69ad SHA-256: bb375f885079a1aab86ce4b476ca4623774169e97292759bfc30d4d66b879523
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One prominent link, 'https://ttraff.cc/pify?keyword=resumen+cien+a%25C3%25B1os+de+soledad+capitulo+2', is identified as a malicious redirector. The document body, though partially corrupted, includes this same URL, suggesting the primary intent is to redirect users to malicious infrastructure. The presence of a link farm and a malicious redirector strongly indicates a phishing or credential harvesting 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.
  • 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=resumen+cien+a%25C3%25B1os+de+soledad+capitulo+2 In PDF document text
    • http://files.floristatwork.com/uploads/1/3/0/7/130775634/sadogosage-moxeva-zaxoku.pdfIn PDF document text
    • http://files.serenity2cministries.com/uploads/1/3/0/8/130813461/wetowogodaba.pdfIn PDF document text
    • http://files.brenleemcknight.com/uploads/1/3/0/8/130814611/nepifa-tasevobabosuvos.pdfIn PDF document text
    • http://files.fourwallsnoceiling.com/uploads/1/3/1/4/131409098/65fcd9e.pdfIn PDF document text
    • http://jirak.pensionplanningsolutions.com/uploads/1/3/1/4/131409508/8e77eb348.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/1/0429/7595/3049/files/xuxozurateruromonukepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7125/7241/files/21688730251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5388/3293/files/1979141153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9196/6617/files/10633569575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2666/7925/files/11672668211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/wuxefeged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9245/8152/files/nyc_bike_path_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6022/3397/files/the_good_morrow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/nonegimojixij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3725/9938/files/mumusuvubazixamivam.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_off00009180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9180 5472 bytes
SHA-256: d18fd6c6f0d99682f0f54e95efc0258c99ba0584a9ba6a6be67383cadea7ea13
font_01_sfnt_off0000a3c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3C6 10900 bytes
SHA-256: 92a0d17a824aaffb9a53d8c7ebb74c2f1f9ea1dbce4c97187da79b014c9582ec

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