Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3874c9b45ef9b58…

MALICIOUS

PDF

48.0 KB Created: 2020-07-25 23:45:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f0643a0c99b88236ffb18387e13f618 SHA-1: c3483d276f12ec1b2a8caa37da85979350d4ebf0 SHA-256: e3874c9b45ef9b581de9b851b543b51ab671d3bcf0a0aed0dcff53ba978feb3d
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous links, identified as a PDF link farm, with one critical heuristic firing indicating a redirect to known malicious infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'free templates borders frames'. The presence of a visual download button heuristic further supports a social engineering attack. The primary malicious IOC is the redirector URL.

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.ru/pify?keyword=free+templates+borders+frames In PDF document text
    • http://files.austinasphaltpaving.com/uploads/1/3/2/6/132682039/3009199.pdfIn PDF document text
    • http://files.delrayvillasplat2.com/uploads/1/3/0/9/130970003/kevuzasipas_ximugosuk_sujoj_womagud.pdfIn PDF document text
    • http://files.limberlostmusic.com/uploads/1/3/1/4/131437680/be11f04a437d.pdfIn PDF document text
    • http://files.9td.org/uploads/1/3/2/7/132740511/kajoxeraxejegoke.pdfIn PDF document text
    • http://files.canalsigling.com/uploads/1/3/1/3/131383018/8717392.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/1/0432/7967/9646/files/samipimonakorufemomigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0653/3527/files/dimaloperajobisavojopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/natepuwitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/sarikajopudepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/40059924761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0645/9029/files/lajemeturaxulefopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/repanamidesowidilanobir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/jevefawezopotogubaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4899/2930/files/kixebudogarefaladojorox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1677/4054/files/73430726414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99914628395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19490865332.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 8

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_off00007730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7730 4916 bytes
SHA-256: 0c1341ce114c45399bb580a105a50169e52649d2501ec7bbae13cd56412d9045
font_01_sfnt_off000087dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DC 13300 bytes
SHA-256: 792f7fa5bc5bd6c50284b38c4e18764c9f302636f1a574b605694cc0b369852a

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