Malicious PDF — malware analysis report

Static analysis result for SHA-256 e508dcb7bf0d24f6…

MALICIOUS

PDF

46.2 KB Created: 2020-07-31 11:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a26046e59acf332892b46c0c2d8c9366 SHA-1: 7eb391ad8c157128f630229b9cac47e9ff32e898 SHA-256: e508dcb7bf0d24f6ea3276ee1d9aa5291cb75ca90e96408d1ecdfcbc98b54306
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to containing a large number of external links, a common tactic for SEO poisoning or distributing malicious content. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=cateterismo+cardiaco+procedimiento+pdf', is identified as a malicious redirector. The ML classifier strongly supports the malicious verdict. The document body appears to be obfuscated or corrupted, preventing a clear understanding of its direct lure.

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=cateterismo+cardiaco+procedimiento+pdf In PDF document text
    • http://files.waiapukidshomebased.com/uploads/1/3/0/8/130813448/juxij.pdfIn PDF document text
    • http://files.leadershipacademyutah.com/uploads/1/3/1/3/131380175/jaruvibukijopefi.pdfIn PDF document text
    • http://files.lakerupdate.com/uploads/1/3/0/7/130740078/gebokosani.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/1/0429/4115/3439/files/19107817761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5469/3529/files/75724174573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/semazeladanoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4701/files/27287496828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3514/7933/files/gitijomaravemexowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7750/0057/files/22457358729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8959/1461/files/simesesar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/wukewoxunezududo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9670/files/zizutux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8305/2696/files/95328728708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/99943303417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0994/7301/files/7772957234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0342/8510/files/pigovivulimejusizarijif.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7501 5080 bytes
SHA-256: c47b772d297fa5ced5a12487f53d41593987283268c4eb3749f9c8bb348ef9d3
font_01_sfnt_off00008632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8632 11004 bytes
SHA-256: 958827410c4718646bea634c7b461b27aafa8938a42bba2a39ddec8ca01e373a

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