Malicious PDF — malware analysis report

Static analysis result for SHA-256 c888a5971cf7df3d…

MALICIOUS

PDF

49.7 KB Created: 2020-08-02 15:35:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f9a246e81db7109cb4ad8bc930f70b8 SHA-1: 341aaa55cf5f76aed10466e583ae7e0097c81cfd SHA-256: c888a5971cf7df3dd46a7332273e84bb0a92aef4a7ed25298532bdf2f160441d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged as malicious by an ML classifier and contains a link farm of numerous external PDF files. One of the embedded URLs, 'https://ttraff.com/pify?keyword=1+99+fletching+guide', points to a known malicious redirector. The document body contains garbled text along with some of the URLs, suggesting it is not intended for human consumption but rather for automated processing or SEO manipulation.

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.com/pify?keyword=1+99+fletching+guide In PDF document text
    • http://files.bsakbusiness.com/uploads/1/3/0/7/130775228/xajigup_vofew_bifat.pdfIn PDF document text
    • http://files.newenglandbusinesscenter.com/uploads/1/3/0/7/130775506/zefedisot.pdfIn PDF document text
    • http://files.nccueagletravel.com/uploads/1/3/1/6/131637484/kunofudetafedarepaba.pdfIn PDF document text
    • http://files.pipsqatar.com/uploads/1/3/1/4/131452838/wipafejadakite_fowedubunu_limuridap.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/1/0447/9621/5456/files/cask_of_merlot_stormwind.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2718/5309/files/67757701745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/nuwox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/lunelanutogapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8468/3166/files/zedukizijagufotatejipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3184/5271/files/discord_sex_bot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0728/files/metuludimez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/tudabosawarogedoduzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4790/3644/files/robert_hansen_medium.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/22724495363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6434/5255/files/25734479566.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_off000084f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F7 4912 bytes
SHA-256: 721ff5f8656d39c11bdf30e418417bc22800a42d495bc0a67533e88ca66de333
font_01_sfnt_off000095b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B4 10596 bytes
SHA-256: fe4333c38177dc12dd2c13f8d8bcbc2e608d003503d342b9414eef81a89593b9

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