Malicious PDF — malware analysis report

Static analysis result for SHA-256 a61dca5b14b7c0db…

MALICIOUS

PDF

50.3 KB Created: 2020-09-06 17:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83cb61659f42849528f83332ea3df3a4 SHA-1: f2c039926e7856c85fb5bd235900d9a62a2853a2 SHA-256: a61dca5b14b7c0db5a81f3210fdcf518c7c99f26870ea90a84b7b7f079141c41
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.club/wix?keyword=naruto+blazing+jp+apk+mod'. This URL is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, also contains this URL and numerous other links to static.usrfiles.com, suggesting a link farm or redirection strategy. The file's purpose appears to be social engineering, using a lure related to a game to trick users into visiting the malicious URL.

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.club/wix?keyword=naruto+blazing+jp+apk+mod In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/41f880_4fe776d10b0a4e5899cd2b7b90250fca.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/599026_323667c5943d4fc484a31cc157a9c1e7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/868401_412fdc913c2c4143990617db53da674f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/769f78_c7d96f83765648c6930a51fe6da01c91.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/270e53_6f5d8059134145bea82e85bb8ed9912c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d954c5_e4d3da8b982d49b799da66830e4b8038.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/50de67_c49664cb2fe74cedae432cfed0f69809.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a8cc01_41febdaca7d042b2b5be0c82a48f48df.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f8de3e_ec974e4a29be4f539caf879a578270c7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cf14a4_db335ceae15549fab4ee96fc7870a6be.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f34323_29d8e5289404437e9f4a14ee98bf2cf8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b910ae_10db352c9442476d88460bbcebd719ad.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/86319b_574961bf12fa4dcaa58fbd7e1e1243c3.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00006d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D30 5400 bytes
SHA-256: a08cf58f55f23691fe5f886cb34cf7de30a6488c63003316fa47ceb1ac7f75ad
font_01_sfnt_off00007f89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F89 10988 bytes
SHA-256: 6308aeb50edca82b6c03c2e732ffc3d5a6ba09c19d9ea2375a2ff98201e01772
font_02_sfnt_off0000a544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA544 16248 bytes
SHA-256: 9e020c854edd9d16e76d4d276d806d6ad9537766fc0f49e31c6b0dee74960295

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