Malicious PDF — malware analysis report

Static analysis result for SHA-256 a533b715a0388572…

MALICIOUS

PDF

44.1 KB Created: 2020-08-02 15:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 24e8ba7ab24b096d58e2f777264e2229 SHA-1: e1ae8f2345dff5b2c1e1cac4100ef5db5b2f98e8 SHA-256: a533b715a0388572741cce78c737f0bf98f529bc3f9fe3a30926203aedd2adc1
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including links to a known redirector and a large number of external PDF links, suggesting a link farm for SEO manipulation or phishing. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=moviebox+pgyer+2015' which is flagged as a malicious redirector. This redirector likely serves as a gateway to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=moviebox+pgyer+2015 In PDF document text
    • http://files.all4pawsdogrescue.com.au/uploads/1/3/1/4/131455883/9425829.pdfIn PDF document text
    • http://files.mkquilts.com/uploads/1/3/0/9/130970012/rekavojogunuje.pdfIn PDF document text
    • http://files.tbylaccessories.com/uploads/1/3/2/3/132303226/992843689.pdfIn PDF document text
    • http://files.ambientisolation.com/uploads/1/3/1/3/131381772/lupajowawatokaw-dojukarekomofif-fuzevubagage.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/1/0432/1997/6350/files/kadigotuzutopitawiganilub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1606/1091/files/kasopofibakizanigoxolumop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/kusalirogabazavijos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4279/8757/files/fairy_tail_episode_314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1179/3315/files/nomatirodevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9447/2856/files/80646670641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/dukifuloxedexezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/26481897679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/jasukoxixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3976/0285/files/riwiranekerafema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6491/0243/files/99753802889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/sisituw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/paxotaxazojulilinitulo.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E8 5392 bytes
SHA-256: fb90aeeacad0c2007c5101c03b8fae636cd31e4b67e2130c5eb69e0e226de89f
font_01_sfnt_off00007a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7A 12928 bytes
SHA-256: 99c6ae15736ff3fbe556cb8fdc463ce177eaaf53b504317637657fbc8ef3cb3b