Malicious PDF — malware analysis report

Static analysis result for SHA-256 1604bdb3424d0d9b…

MALICIOUS

PDF

44.6 KB Created: 2020-09-13 15:08:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 495b3bdcf3194407df6b931fed71a71a SHA-1: b897338e726c4d28758ce03410922c1cf27625c1 SHA-256: 1604bdb3424d0d9bfe98df55cb5c1f328e3f6e90a5b5d3d3ca50abbf8d13b315
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the lure text 'Minecraft military base tutorial' and the malicious URL 'https://ttraff.me/wix?keyword=minecraft+military+base+tutorial'. The ML classifier strongly flagged this PDF as malicious, and heuristics identified it as a redirector and part of a link farm.

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.me/wix?keyword=minecraft+military+base+tutorial In PDF document text
    • http://files.solerconsulting.com/uploads/1/3/2/6/132696015/xuxugiguvo.pdfIn PDF document text
    • http://files.strandeddog.com/uploads/1/3/2/7/132740852/917f4ea86.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/1/0428/5900/4070/files/98821751458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4014/5313/files/81732705689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7274/1791/files/sulezalajuwefawem.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_8acb1d33c0c64a58a6a8bc1a74083211.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cec570_446626bcde0047a8bc7c0198d818fbf2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2ca22b_1d0a944bdc984394bf722672c6ef47ea.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f3bfbb_ae87b0b1e42844f2827178610b243f7f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/99a8f2_3cd27377ff0f446f9d4156a31c6b4281.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_5000b089e67f44d9981577ab7ba9da1f.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 3

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_off00006533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6533 5156 bytes
SHA-256: 6ace0901a423ac39703b58c30dfb36d1b6dc28991d010b9d3627669a8330b4f3
font_01_sfnt_off000076a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76A7 9648 bytes
SHA-256: 7a54762e0ae75101e1c8c1572e2cecdf9b0c1f844d350042aa3006f5c28aa70b
font_02_sfnt_off0000979e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x979E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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