Malicious PDF — malware analysis report

Static analysis result for SHA-256 c827eec04e8304e9…

MALICIOUS

PDF

44.3 KB Created: 2020-08-24 07:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 849e545fabf897718376745268b5af26 SHA-1: 47260b939deec968f8c1e86039989b15e276a76e SHA-256: c827eec04e8304e97b2b8f7ddda95978b08449383778b2ee9bf85b24788beaa6
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking title, suggesting a lure. The primary attack vector appears to be social engineering via a deceptive link within the PDF.

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=international+migration+report+2018+un In PDF document text
    • http://files.humanities.shenfieldlearning.com/uploads/1/3/1/3/131397946/1664648.pdfIn PDF document text
    • http://files.madisonalvarez.com/uploads/1/3/2/7/132740281/01fb0.pdfIn PDF document text
    • http://files.nolarichardson.com/uploads/1/3/1/4/131453124/levefis-nisutodimu-lafiluvi-sukuvuvun.pdfIn PDF document text
    • http://files.brushdartistry.com/uploads/1/3/1/4/131438557/gojatudunapowu.pdfIn PDF document text
    • http://bujibe.fastflyingmarketing.org/uploads/1/3/0/9/130969744/wazedikefopaxi.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/1/0433/7709/8910/files/87654716210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8563/4463/files/mga_bayani_ng_pilipinas_at_ang_kanilang_nagawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8258/6014/files/how_to_edit_to_word_converter_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9691/4586/files/firuxuduwovimisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/22581277752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/modetigawedipetozuxafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8517/5713/files/xorezumimid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/sindrome_de_burnout_en_madres.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 7

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_off00006e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2E 5420 bytes
SHA-256: 7aa21c36f79db024353b2a6735007a8a5a64e4beda302c3a3ee2215181da247b
font_01_sfnt_off00008084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8084 10568 bytes
SHA-256: 4bec266a328bfc457567c948ff4d8a7638070959ff27f293a2f739600443aa95

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