Malicious PDF — malware analysis report

Static analysis result for SHA-256 f909cbb1ffe6083b…

MALICIOUS

PDF

40.1 KB Created: 2020-08-12 15:27:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9bfb1de44431363dd342a8b06cb0a5d9 SHA-1: 858fb0a8cfaf5938bdc91b47ff2de4fa7a79f157 SHA-256: f909cbb1ffe6083b3f2e0a0d44a687dea49d3b0e357f7216348b528bcf48e882
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a worksheet. This indicates a likely phishing or malware distribution attempt. The PDF also contains a large number of external links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse to improve search engine ranking for malicious content. No scripts were extracted, but the presence of the malicious redirector and the link farm strategy strongly suggest a malicious intent.

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/wb?keyword=multiplying%20and%20dividing%20decimals%20worksheet%20pdf In PDF document text
    • http://xineg.tanasi-sharkfinguitarpicks.com/uploads/1/3/1/3/131398591/bdbdef2.pdfIn PDF document text
    • http://wemoravip.mi-sheffield.com/uploads/1/3/1/4/131483337/b741823783b08.pdfIn PDF document text
    • http://files.howardssilverlabs.com/uploads/1/3/2/7/132740620/wedugeve.pdfIn PDF document text
    • http://files.buggytownbirddogs.com/uploads/1/3/0/7/130775544/nisulozuzorusumug.pdfIn PDF document text
    • http://files.beasleydoodles.net/uploads/1/3/1/3/131398547/lasejofadezi.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/1/0434/0521/3847/files/92923818108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2402/2680/files/bankruptcy_act_qld.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0627/1394/files/71720950252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/41036600391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31906594002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4058/7431/files/todex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/jefoxolubikabesukukupivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/59607308210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/carte_du_monde.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6697/2577/files/20067635535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9832/4640/files/32585626207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7004/4825/files/unofficial_skyrim_patch.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_off00005dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBD 5892 bytes
SHA-256: 0200155057932251a13b6ee60189dae19477dab0116d22f0d0f507ca0c134ac0
font_01_sfnt_off000071c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C0 9792 bytes
SHA-256: 3ab3cf32adc6fe982475dbd0a947635ec06cee1671615b1423f1cbda81ba43a2

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