Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62584d1d278939a…

MALICIOUS

PDF

40.2 KB Created: 2020-07-15 18:52:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: 48a19a1892a997dd4fe5e0c7ec6f8368 SHA-1: 5d6c5a5ee7b4ea21ac6c2f226cf8c03162be33ac SHA-256: b62584d1d278939a4e95ee4e60bfe85f03de6adff1d0bcd1d29e6bbb1e24c112
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is ttraff.com, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, suggests a lure related to 'lyrics pdf', aiming to trick users into clicking the malicious links.

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/wb?keyword=stand%20in%20your%20love%20lyrics%20pdf In PDF document text
    • http://files.arlingtonreformedchurch.org/uploads/1/3/0/7/130739769/2721911.pdfIn PDF document text
    • http://files.fasteddiesworldofspeed.com/uploads/1/3/1/4/131453496/getuzekuzepojavap.pdfIn PDF document text
    • http://files.northerndriveschool.com/uploads/1/3/0/7/130776619/rimipasagelasal_kefijomuguse.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/1/0433/0687/7080/files/ximulomonarosaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mupuxisupevijerabufogete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7053/8406/files/fesatodixifawula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4546/9858/files/8656073774.pdfIn PDF document text
    • https://wipafuvuz.files.wordpress.com/2020/06/bidatuzukala.pdfIn PDF document text
    • https://zikusale.files.wordpress.com/2020/06/67275966160.pdfIn PDF document text
    • https://vamosusugul.files.wordpress.com/2020/07/15374834482.pdfIn PDF document text
    • https://lujasusa646474622.files.wordpress.com/2020/06/88912163665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2479/3245/files/97889713952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71482320097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67768868558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91146339154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7514/1794/files/31186821156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/37011084808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuvuwagel.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_off000060ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EA 5296 bytes
SHA-256: a857580cc4f103a4e51930f4a8213bf09eef833ffdfe455518e18a01ab15e2b1
font_01_sfnt_off000072f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F9 9500 bytes
SHA-256: 9e0238c8b62f9a684b81b43387a97747996afdb5c60e2babc235ef9f8174e857

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