Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa171782c184b03…

MALICIOUS

PDF

42.1 KB Created: 2020-09-13 08:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9386a87c5e0d5604bb37559c226bc118 SHA-1: 3c44100636b5ff93858f3fc542bd73ee0f9448e7 SHA-256: 5fa171782c184b03bb8df6b67f2e4a7abac73c7df18bf8e1fd0cbedaab7e374c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a deceptive title and body text intended to trick users into clicking a link. This link, 'https://ttraff.me/pify?keyword=oraciones+de+san+judas+tadeo+para+los+enfermos', is identified as a malicious redirector leading to a farm of other PDF documents. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or redirection scheme.

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.me/pify?keyword=oraciones+de+san+judas+tadeo+para+los+enfermos In PDF document text
    • http://mipekel.kaphc.org/uploads/1/3/2/8/132814930/ecbd104e91.pdfIn PDF document text
    • http://pakobul.therootsofspiritualculture.net/uploads/1/3/0/9/130969684/jaderuzujugite.pdfIn PDF document text
    • http://miposog.sharoncarrjewellery.com/uploads/1/3/1/4/131437254/1096518.pdfIn PDF document text
    • http://files.rn-photo.com/uploads/1/3/1/4/131406222/xibasilosotelur.pdfIn PDF document text
    • http://bisofij.infurnace.com/uploads/1/3/0/7/130775735/d4c4306c813c939.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/3ceeb9_ad2505acd9d94f05b284e719ed8865ad.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c2007e_03f85c93756e4e6691eb49ed6d18b0ed.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/368de4_16f50bba7fd14da38b4ea72e68d6cb49.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4418/3974/files/autosuggestion_bungen.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b98abb_3a1964153f8e4527ba600223838fca92.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7baf93_97a41c8764794c72ab3c3c258ed2c205.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ac1638_e5025c8c1fa54fd293b7bc72ef489070.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_off00006214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6214 5404 bytes
SHA-256: b1084663982d5c7632a1677b5cdae2f60de5cdf245086407b08687dd3b3b2766
font_01_sfnt_off00007462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7462 11512 bytes
SHA-256: f3e1ba8f7ebccf5db0e01e47a094485c36173cead6581dc8f5994eda65a1ce6c

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