Malicious PDF — malware analysis report

Static analysis result for SHA-256 31dad486687056f8…

MALICIOUS

PDF

44.0 KB Created: 2020-08-12 05:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 19c8ca6f499d80ff8a2929f15d10b6c0 SHA-1: 206daa6eb744b79a0789ef28e9346fd08a91451d SHA-256: 31dad486687056f8a4efbca0544e8c0dc29f0f528d0dfb84d3d7ed349ba3265c
194 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=libro+el+magisterio+de+la+iglesia+pdf'. Another heuristic detected a link farm with 12 external PDF links, many hosted on shopify.com, suggesting an attempt to obscure the true destination or spread malicious content across multiple domains. The document body itself contains garbled text and a repeated malicious URL, further indicating a malicious intent to redirect users.

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.com/pify?keyword=libro+el+magisterio+de+la+iglesia+pdf In PDF document text
    • http://files.koldblooded.net/uploads/1/3/1/3/131383651/vevatejidesol_bevuvegapudewe.pdfIn PDF document text
    • http://files.naturallyyoursbyisabel.com/uploads/1/3/1/1/131163635/vorij.pdfIn PDF document text
    • http://tuxexa.codyjwoods.com/uploads/1/3/2/8/132814930/konebopopexuwidu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5353/1807/files/xoxizarotavuzufisamunoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2235/8427/files/wisujibadufirunudigebuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9246/6080/files/94922556213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/sefibozim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6711/1584/files/30983072721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6671/0433/files/ruramapikizejosen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/48236812167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7949/8918/files/lolulazuvapupebadije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/21261010369.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005da6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA6 5124 bytes
SHA-256: a0413c9547ad5d5575db0a09b31ff4b875d2d2cffa7e495e1c5c89da41488d01
font_01_sfnt_off00006f08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F08 11708 bytes
SHA-256: 7352d22980e372b9ae8f87e14d2b8ada05bfab358f589eeea3df3650d3a57e19
font_02_sfnt_off00009529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9529 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.