Malicious PDF — malware analysis report

Static analysis result for SHA-256 74ffa24187e405bb…

MALICIOUS

PDF

40.1 KB Created: 2020-08-11 02:15:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b3123716efc7dbd82e0d3de1f4ab69c SHA-1: dcb62b1601b4867e675ef4d8df60a8167d7f5038 SHA-256: 74ffa24187e405bb4a711d7c08695b8471deea57e60dc433eb316f6290db46bf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many of which point to a redirector service at 'ttraff.ru'. This service is used to obscure the final destination, which is likely malicious. The document body text and embedded URLs suggest a lure for free PDF downloads, which is a common tactic for phishing or malware distribution. 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=bluestone+alley+piano+sheet+pdf+free In PDF document text
    • http://files.yenzfacepainting.com/uploads/1/3/2/6/132682171/08048749a60.pdfIn PDF document text
    • http://files.glyniskozmacoaching.com/uploads/1/3/1/4/131438329/kurag-zarim-nirizekififu.pdfIn PDF document text
    • http://files.beckerpark.com/uploads/1/3/2/7/132712514/xuxukisoxoxeb_wupolamosafos_jawejukabodinax_fimaligamidiki.pdfIn PDF document text
    • http://megim.pgoody.com/uploads/1/3/2/7/132712615/fopeto-dekirib-bikoripakurori-vegosaxib.pdfIn PDF document text
    • http://files.ozarksridgecrest.com/uploads/1/3/2/6/132681390/kutinimogi_wuxezixa_zabujigazalono_xudife.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/1/0431/8583/2096/files/fijodamobuwunafowuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8051/5745/files/33069416250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3349/3655/files/bulepeziviwuxiketesafever.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/85776056888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tevedizulav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xifadek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5962/5627/files/inayatullah_novels_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/3d_plot_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/bbq_recipes_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/punisosejonuvirutokif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/65152969562.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_off000050f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50F0 5280 bytes
SHA-256: 64406e6c8ee0e29fab189c9008642cff16e7e6c78385d923f9a7b5de21defdc7
font_01_sfnt_off000062e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E5 15976 bytes
SHA-256: a3e424fd5691dd6805347605b4d8b7666ad9e5ee1a92979f1e1183bcf5aaa320

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