Malicious PDF — malware analysis report

Static analysis result for SHA-256 72d7708dd2f75bf1…

MALICIOUS

PDF

43.6 KB Created: 2020-08-22 03:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7e8369ac7887ea7fce5c044526b8a7a SHA-1: ba6865aba8d77649a342405a9c91a5dafba5acc7 SHA-256: 72d7708dd2f75bf1443c0eb13d60099d478cea813c49f7a659feceb6ad05b270
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF contains numerous links, many pointing to an SEO redirector infrastructure. The primary redirector URL, 'https://ttraff.ru/pify?keyword=quicktime+avid+dnxhd+codec', is flagged as malicious. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a phishing or scam attempt to drive traffic to malicious sites. The ML classifier also strongly indicated maliciousness.

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=quicktime+avid+dnxhd+codec In PDF document text
    • http://files.jbpaoletti.com/uploads/1/3/1/4/131407423/jibopitavizik.pdfIn PDF document text
    • http://files.bartlettyearbook.com/uploads/1/3/1/0/131069886/dokabixikarok-zataji-gadupenoxoga-jafejisogetu.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/1/0433/3505/7559/files/perajatitujonitopuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0416/4257/files/avantage_comparatif_et_absolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/how_to_reduce_bullying_in_schools.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/kisepojisuweligel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/minecraft_repair_and_disenchant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/dead_frontier_wiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4930/2693/files/wuzujesunogale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/32983582660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7332/0600/files/web_designing_course_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0858/7938/files/wovuxalimapirufitabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/zalilirar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/article_370_urdu.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 4

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_off00006bcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCF 5128 bytes
SHA-256: b664ededa450162041daf823c4cffbbab9b3345110fd2364c49fa4c3c7839f88
font_01_sfnt_off00007d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D23 10612 bytes
SHA-256: 8a604c6a400ac5478ba641aa17b0a04114319f3151ace2c3c413cdd8803bd6df

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