Malicious PDF — malware analysis report

Static analysis result for SHA-256 684b573f58f56e5f…

MALICIOUS

PDF

62.3 KB Created: 2020-08-16 20:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b056bda20ef56a5ebba3cf2e90d8caf SHA-1: 1681c35eb56e0cbf99e2544114cc16db6077d54d SHA-256: 684b573f58f56e5f0f8a89ef9c1f47de2604dfc8dc29be81c7d087c3d488856e
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious infrastructure. The embedded URL points to a redirector that ultimately leads to a suspicious domain, likely for phishing or malware delivery. No scripts were extracted, but the PDF structure and embedded links 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/pify?keyword=prodigy+autocode+user+manual In PDF document text
    • http://files.ccmooresville.com/uploads/1/3/1/3/131381819/tanupip.pdfIn PDF document text
    • http://biramoguv.inspiredwellbeing.com.au/uploads/1/3/2/8/132815176/ce0479078769bc.pdfIn PDF document text
    • http://nopop.fullcirclewnc.org/uploads/1/3/1/4/131438672/2756219.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/1/0437/8286/5047/files/linux_command_line_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2308/1373/files/73437722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/30463589372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6694/7744/files/cercle_trigonomtrique.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1729/8329/files/12726011440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/72941912499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0629/1102/files/rugurunoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/zasavide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/35070508900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/utorrent_apk_for_iphone.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_off0000b502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB502 5360 bytes
SHA-256: 0bd53d975bc663193c605fbe59475e14b27dfc8d0bb4c4cd8b69182b4117d4d0
font_01_sfnt_off0000c729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC729 10764 bytes
SHA-256: 04590ae777a1a1bc993382a99a4d51adf85a6b6d82d7d5c24f290c3a1f999f34

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