Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ac10d85082ab835…

MALICIOUS

PDF

54.0 KB Created: 2020-09-16 15:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0384bb8f7085ce0c35df00eddd585f1d SHA-1: 345690b8ff1469a2427dea0c4ddf53ec73edda16 SHA-256: 0ac10d85082ab835308e72bb368facac1c1886f92b998fcbea3716933290fefb
194 Risk Score

Malware Insights

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

This PDF file contains numerous links, including one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to lure users to malicious content. The presence of multiple external PDF links also indicates a link farm strategy, likely for SEO manipulation or distributing further malicious content.

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.club/wix?keyword=capital+city+hockey+league+fredericton In PDF document text
    • http://files.susancontini.com/uploads/1/3/1/4/131453555/mevudomavi_resopegubaj.pdfIn PDF document text
    • http://mukukupap.leonradu.com/uploads/1/3/1/4/131453329/ruxabatibofuv.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://571ab5bd-f1a1-40d7-81da-bfa8395d40ac.filesusr.com/ugd/89064d_bb062134b9f742c892ee8fd0ee9d65be.pdf?index=trueIn PDF document text
    • https://21fd8470-4682-42cb-b25f-9bc0d726b444.filesusr.com/ugd/29c71c_22d0a2cd1799428bac43f57311a9fe69.pdf?index=trueIn PDF document text
    • https://2da9dcb8-9e6e-4622-898c-105837280d26.filesusr.com/ugd/9ea91e_8076590b78cc4ca3a9493a086043b0a6.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kesazemoluvumexon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6237/8152/files/15382262478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/8216/1832/files/82112867231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/9608/9252/files/wanezikopujevulis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9336/7710/files/40755376231.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C1 6476 bytes
SHA-256: 51ab6905290750564d90708e7631dedb146f5386d6918388d3b3373a2b20f6d9
font_01_sfnt_off000070c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C7 5312 bytes
SHA-256: 77134175bb5f4f1e19366191cd6dcdddb3336e4017358140fb6e94d4e928c104
font_02_sfnt_off000082da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DA 10832 bytes
SHA-256: dc450d55df06b5f0a68d23fbc0d069889e59af0d3b1b0b3f0cd7ba9263b923aa
font_03_sfnt_off0000a7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7FD 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f
font_04_sfnt_off0000bc67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC67 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34