Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1f4d99c59958220…

MALICIOUS

PDF

46.6 KB Created: 2020-07-22 01:28:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 871bc9ad697e0f8b6b400b108cb262c8 SHA-1: 2ce79f3fcf9c97a130bf5255dbd1d8e33638d029 SHA-256: b1f4d99c59958220c5f6dd77a56a342dc4c5bb31bb2ce0b16a4d1e6684061da8
202 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link and a mass of external PDF links, suggesting a link farm or redirection attempt. The presence of a 'download button' heuristic further supports a lure-based attack pattern. The primary malicious URL identified is ttraff.cc, which is known for redirecting to malicious content. The document body is heavily obfuscated and does not provide clear textual intent.

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/wb?keyword=blank%20index%20page%20pdf%20download In PDF document text
    • http://files.webnova.net/uploads/1/3/1/8/131857655/xazozez-tedopadomape-pesapolotu-donutelizedul.pdfIn PDF document text
    • http://files.myprojectindia.org/uploads/1/3/1/3/131398598/paduvufuzizile.pdfIn PDF document text
    • http://files.beanashtangi.com/uploads/1/3/0/8/130874338/vidizuguv.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/1/0433/0687/7080/files/34680977850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30151397197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/tikijeteput.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2105/7700/files/80304402549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2827/3562/files/74627081389.pdfIn PDF document text
    • https://dajajotunur.files.wordpress.com/2020/07/roruporugetamafi.pdfIn PDF document text
    • https://zaludevibam.files.wordpress.com/2020/07/zibobuviwarigajag.pdfIn PDF document text
    • https://tuvibusexof378215611.files.wordpress.com/2020/06/70564077121.pdfIn PDF document text
    • https://retisabu.files.wordpress.com/2020/07/36969285053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3152/6561/files/32534928692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/3554464864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesulemenakasisot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1566/6840/files/ratedanotuxesolilosaneko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/58397719845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5641/4363/files/73348101289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/pagokujaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/41255620418.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_off00007957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7957 4916 bytes
SHA-256: eb75d05edd655a8bf4932c20527192bb62ee7be6f7a5f8ec0f76f73b2d4cd38a
font_01_sfnt_off00008a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A34 10188 bytes
SHA-256: 1e38bbe2cab006e41650d566256dd9b1723b9ca476f232bdd3605b83e8372b00