Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b456f3518271a0d…

MALICIOUS

PDF

45.0 KB Created: 2020-08-08 00:43:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 37aaaedaa075bfe5d559cf96ebc219e9 SHA-1: 060cac6d9172349020aae2e38e529a5a7439ac33 SHA-256: 5b456f3518271a0db01ce733932b33c79495837f859bdc6a705819a21b27e752
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it's a malicious redirector, specifically designed to link to external sites for SEO purposes, likely as a lure for phishing or malware. The ML classifier strongly supports this assessment. The embedded URL points to a known malicious redirector, which is the primary IOC.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=effective+public+relations+8th+edition+pdf In PDF document text
    • http://files.perfectbreakcaravans.com/uploads/1/3/2/7/132740270/zenari_tiranibapo_wukilepanese_kedafamowugiwom.pdfIn PDF document text
    • http://fujatugut.svfmcoalition.org/uploads/1/3/0/7/130775768/nozazoj.pdfIn PDF document text
    • http://files.charaliliana.com/uploads/1/3/1/3/131383318/226648.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8922/3066/files/lesamub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/95215094606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/nuzuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2566/0066/files/44125198073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/gadarisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3051/8682/files/57804402975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/rosujepifowonerezamanele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2770/1655/files/84260437190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/johnson_70_hp_outboard_manual_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/solaris_11_administration_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6201 5476 bytes
SHA-256: 7ad94b508905310856dff4180ac81c5756d758f44afd0e0af23a50bda8bcce8b
font_01_sfnt_off0000748e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x748E 10584 bytes
SHA-256: 6ae80576d96ef22ed6970b63864e0aa4250ca77adf7ce9e6e2bd5d67c014c121
font_02_sfnt_off000098b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98B5 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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