Malicious PDF — malware analysis report

Static analysis result for SHA-256 9800dc6c1f788bc2…

MALICIOUS

PDF

53.5 KB Created: 2020-08-07 20:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86ae6058b08543b938ed248dca1d48ed SHA-1: ae814998b7b6fd63fe241696f269ec255a0ffd08 SHA-256: 9800dc6c1f788bc2fc9e8516f568effa65a2c5a9f1d3d50fb0312cfd0451a6e9
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link `https://ttraff.ru/pify?keyword=botany+notes+for+bsc+2nd+year+pdf` points to malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic further suggests that the document is designed to host numerous external links, likely for SEO manipulation or to distribute malicious content. No scripts were extracted from this sample.

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.ru/pify?keyword=botany+notes+for+bsc+2nd+year+pdf In PDF document text
    • http://files.mrbeansadventures.com/uploads/1/3/1/4/131454345/javatojenadejuf.pdfIn PDF document text
    • http://files.writethegoodfuture.org/uploads/1/3/1/3/131379792/fonudix.pdfIn PDF document text
    • http://files.rcampbellconstructionllc.com/uploads/1/3/0/7/130775402/5123977.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/1/0433/5969/9109/files/43614881597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5335/0053/files/57836430562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/midojak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5795/4464/files/zapovasanununofol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7299/4971/files/goxoxamak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/20838795234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5624/2581/files/free_editor_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9877/6487/files/65438086409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2549/7250/files/wabagijeguzevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/lizafen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/bulozigigazipekulaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0568/1557/files/kupugixejuxadusixeselepof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7811/3697/files/retoxadovepamuwefiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6605/5063/files/64591407608.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_off00007312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7312 5540 bytes
SHA-256: 3095f022e930fce94f7522d7f7f155e9a2f7e9d4a08be31c98483e20eca0c983
font_01_sfnt_off000085fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FD 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00008e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8A 10748 bytes
SHA-256: 6dbd7844d83225525d1c3822e4d73826ab1d0fb22ee2b553f118ef279b13b1d5
font_03_sfnt_off0000b333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB333 16068 bytes
SHA-256: 9e1271d681207e96fe60c94df920a27091a957dc81e2614e9e6235263a34fce6