Malicious PDF — malware analysis report

Static analysis result for SHA-256 2015bf11f84f7ae8…

MALICIOUS

PDF

49.4 KB Created: 2020-07-26 20:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce4a6d012c317e4778cfc379698316c1 SHA-1: cc8b4f6cc3bca3a09657276bbc87c4474f1c0c82 SHA-256: 2015bf11f84f7ae898503aaa5fbdd32042f9440e3b98e7d775f6ade6196d758c
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com), suggesting a link farm or phishing campaign. The document body's title, 'Video from twitter direct message', is a common lure. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely to redirect users to malicious content or phishing sites.

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.com/pify?keyword=video+from+twitter+direct+message In PDF document text
    • http://files.lknailsandbeauty.co.uk/uploads/1/3/2/6/132681938/wovaxale.pdfIn PDF document text
    • http://files.stephanielamprea.com/uploads/1/3/0/7/130776728/bb48b1e665c8814.pdfIn PDF document text
    • http://files.silentvoices.org/uploads/1/3/1/3/131382330/zemetimetelawilaniro.pdfIn PDF document text
    • http://files.mosim.org/uploads/1/3/2/3/132302993/5476439.pdfIn PDF document text
    • http://files.wholebodylifestyle.com/uploads/1/3/1/8/131871439/venawumejivul_xokabugu_gurodo.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/1/0429/5095/1066/files/10326180903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/pemobifufufomadasixidibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/38017864451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/45571259290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1784/4382/files/budililajojedogawuwakoduk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4621/4564/files/24997096327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5747/8823/files/depagivinegironupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6594/1922/files/tojijepixikawuvodojubat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/jagabomixerinimozige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1440/5793/files/gegudobekatosefipexakiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/mosoxula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8642/0893/files/gekolosogifab.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_off00007adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADB 5048 bytes
SHA-256: b20e4d60a3df8ddc4dca4a6263c9c65deb5f731546507aded98fda43ea39fb8e
font_01_sfnt_off00008c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1B 14020 bytes
SHA-256: 51a9fb98724f0a73e89e55355ba75a6bac09a1c331f675108903a4f4a3469232

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