Malicious PDF — malware analysis report

Static analysis result for SHA-256 733e488f9137ca6f…

MALICIOUS

PDF

43.9 KB Created: 2020-08-14 20:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e772033ef9f913251ab65739d68e50f SHA-1: 49404169fe7634cf3445b515ee3b8f9b904fb561 SHA-256: 733e488f9137ca6f053ba3d7163fab463f794066de078b8132bbea4442bc6080
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'https://ttraff.cc/pify?keyword=tra%25C3%25A7o+falciforme+e+altitude'. This indicates the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of numerous links suggests an attempt to lead the user to a malicious site.

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=tra%25C3%25A7o+falciforme+e+altitude In PDF document text
    • http://nuraxod.m.wchqfm.com/uploads/1/3/1/3/131379833/958a31.pdfIn PDF document text
    • http://files.lauribenblattconsulting.com/uploads/1/3/1/8/131871992/8502216.pdfIn PDF document text
    • http://mojowap.crawfordphoto.org/uploads/1/3/0/8/130874457/b2061bc26b3.pdfIn PDF document text
    • http://files.rabbitcustom.com/uploads/1/3/1/1/131164112/lebonor.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/1/0440/0427/8422/files/6154817399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9395/files/sogivixanodujuxepisana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3444/2908/files/mexenitaxomiraki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/oxford_bookworms_library_stage_6_the_woman_in_white.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4914/8838/files/40402590862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7984/2457/files/gakalekan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4897/6027/files/36345634411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7805/0201/files/wajifunezefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/37267241831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/98710439479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6851/2669/files/38654173474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1936/9628/files/busta_rhymes_net_worth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/betowawon.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 5

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_off00006ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB3 5120 bytes
SHA-256: c49b8ea29dd8b0fb0ce6b798aba92510cc138ba906463107f02d1dee24829d2f
font_01_sfnt_off00007bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBA 12460 bytes
SHA-256: 79674b1522363d0bd8d4596cde47a9352559c7683bc8f58bd7a5e01735f6b920

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