Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ea57bdfe7a9f525…

MALICIOUS

PDF

37.1 KB Created: 2020-08-13 22:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c83a37cbd3aaae194e5de5356851341 SHA-1: 14fe712fc78a485291f6a7829d558e92c15e7c52 SHA-256: 5ea57bdfe7a9f525dad3f171a6b389161e9bf5ec8bb83631d5bd66933bb86fa5
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to attract users through search engines, likely for phishing or malware distribution. The presence of multiple PDF links and a redirector strongly suggests an attempt to lead the user to a malicious destination.

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=rwth+outlook+einrichten+android In PDF document text
    • http://files.sjnww.org/uploads/1/3/0/8/130814644/7848327.pdfIn PDF document text
    • http://files.yourwildwisdom.com/uploads/1/3/1/6/131637308/9634068.pdfIn PDF document text
    • http://raburid.chestervt.gov/uploads/1/3/1/4/131482976/779fe0c6f3d7d.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/1/0433/5756/9176/files/82729959246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/96353902788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wakorijupomimenupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/kevupiguvoxiluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8888/7460/files/lojusavubamubudivameno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9025/4749/files/20103640353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/dusixurexuzakebeminager.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/52340598466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/equivalent_fractions_worksheets_grade_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xewujixamugovaginebutomo.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 1

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_off000050f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50F2 5012 bytes
SHA-256: 7c0f7f31a150fd5cff999fe4779957f45b756fa7f060429d4e1559af5fdd5143
font_01_sfnt_off00006207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6207 11500 bytes
SHA-256: 2ad7983b3ba46ed33c10492870292e3e25b9a57a1919b2d2a2d7287c00b1fd6f

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