Malicious PDF — malware analysis report

Static analysis result for SHA-256 39c66ae80c179a6d…

MALICIOUS

PDF

51.3 KB Created: 2020-08-07 13:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ca0d8e8f773b49f62c263faaeecf617 SHA-1: 370296118845fac87a9f1ff79288c996d7a8d8c9 SHA-256: 39c66ae80c179a6df9e2267457927f0ffe0c9293367d31546de5e020f67ae4ee
194 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large farm of external PDF links. The primary malicious link, https://ttraff.com/pify?keyword=biegelinie+tabelle+pdf, is likely used to redirect users to a malicious site. The document body contains garbled text but also includes the malicious URL, reinforcing its purpose. The presence of numerous links suggests a broad attempt at user engagement for malicious purposes.

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=biegelinie+tabelle+pdf In PDF document text
    • http://files.theplatinumbutton.com/uploads/1/3/1/3/131398091/wonukalabafuz-wivuvarepez-powategaj.pdfIn PDF document text
    • http://files.kathleenmercury.com/uploads/1/3/1/4/131406036/tijurut.pdfIn PDF document text
    • http://files.albcountry.co.uk/uploads/1/3/2/6/132696194/sibasigepediw.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://cdn.shopify.com/s/files/1/0432/9016/5403/files/stardew_valley_lake_fish_bundle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/ranasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9291/8947/files/mokaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/58631550930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/62011391083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2934/9030/files/dajog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3824/5017/files/rumuzebemogosunerosap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/epilepsia_causas_sintomas_y_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6061/6599/files/74490105725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7821/1991/files/27026570778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/83027876939.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6570 4804 bytes
SHA-256: 590e58eacf78db85871efff7fe4d8d8d6ddf4f468a7c678cbfa27b8275a2bcbb
font_01_sfnt_off000075d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D0 11452 bytes
SHA-256: 70ddd12d309fefb8adef793edaece31c00d16de1df6f63efbb6460b9d81ec299
font_02_sfnt_off00009b83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B83 16168 bytes
SHA-256: b2ac67756ccb9a38f0303b1ba820cb5c8b4ab6133599e7fd07ad9e712984a954
font_03_sfnt_off0000b099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB099 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176