Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ffeb772269641a4…

MALICIOUS

PDF

44.0 KB Created: 2020-08-10 10:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e4061744d94932122bfb82d89bbe683 SHA-1: 0dc4f67728ef0a92974996ba5cb6502e192dd9d5 SHA-256: 6ffeb772269641a40e109eeb0628e4c5bf3de54c329d094f4a215a5e4f91113f
194 Risk Score

Malware Insights

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

The PDF file was generated by wkhtmltopdf and contains a large number of embedded links, many pointing to a redirector service. The heuristic firings indicate that these links are used for malicious redirection and potentially as part of an SEO link farm. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=tonight+west+side+story+piano+pdf, which is flagged as a malicious redirector.

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=tonight+west+side+story+piano+pdf In PDF document text
    • http://kubodovuz.robbavister.com/uploads/1/3/1/3/131379833/2843705.pdfIn PDF document text
    • http://files.lyndsayrice.com/uploads/1/3/1/3/131383838/603f3c5bb2fc3f.pdfIn PDF document text
    • http://files.alexandriaprevents.com/uploads/1/3/1/4/131406849/nufomub-lunonul-bisemuseme-timujevurosune.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/1/0428/0408/4899/files/jaditinowazakixijara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/40105133917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2490/7414/files/72426960205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/75857288811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/65327047340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/zilazesakefejorusifopav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9751/0308/files/barkley_np_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/aptitude_topics_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/vavuwodovejizej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0699/2289/files/psychological_testing_ebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7840/1700/files/jabazukudaborilarazazope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/saxexof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/30650754883.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5234 3532 bytes
SHA-256: fa42719291cae2e234e1c7b113a130df1dad708d5141d50a401293f0354084e0
font_01_sfnt_off00005ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECF 5416 bytes
SHA-256: 06143dd2dc354c1174d6cf215dd48ebee57b205637db5fe55970da6d0dc485bd
font_02_sfnt_off00007151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7151 14968 bytes
SHA-256: b3855cf35be6efb44039a1766ce698b2628ee7994e8e09f82c4b58a46ec56ec3

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