Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5406e623103f51…

MALICIOUS

PDF

43.7 KB Created: 2020-08-06 06:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a978cec4eab56d8efe476c97796be3b SHA-1: c96fcb7cc64fc91019a4f5155e956acaf6d19499 SHA-256: fc5406e623103f5198486fcd151cb909f2977a11aa201d072633495980e918c1
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique commonly used for SEO spam or to distribute malicious content. One of the primary links, 'https://ttraff.ru/pify?keyword=nyc+subway+map+manhattan+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain references to this URL and other PDF files hosted on various domains, suggesting a link farm designed to lure users to malicious infrastructure.

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=nyc+subway+map+manhattan+pdf In PDF document text
    • http://files.superiordetails.com/uploads/1/3/1/6/131606111/valijudala.pdfIn PDF document text
    • http://files.emilydunbar.com/uploads/1/3/1/4/131455475/e7b37be814b.pdfIn PDF document text
    • http://files.waterfeaturesbybluecreek.com/uploads/1/3/0/7/130775808/47808b3ec3d8.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/1/0446/5029/9555/files/gregg_reference_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6697/2577/files/34769976548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51268900441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/love_stage_ep_1_english_sub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67279733654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/53107301861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6277/9295/files/antiemticos_na_gravidez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83260340608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/detugamajelafuxe.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 1

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_off00006254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 5568 bytes
SHA-256: b96a6ebc00b8b97853d4e6d30604492c044f5b713ddcf316539921986f232906
font_01_sfnt_off00007543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7543 14348 bytes
SHA-256: d878b330e3c41da834f9f3c0b00dd8aa466b90396ca221f13bcffe55107ead79

Open this report in the interactive analyzer, or submit your own file for analysis.