Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ebefa3cadca1d2b…

MALICIOUS

PDF

38.0 KB Created: 2020-07-22 01:31:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: 2a1cec905f974aad0b3cfa2fd93844fb SHA-1: 8558717cdd2622deb01c2b07c35f76b1027d73a8 SHA-256: 9ebefa3cadca1d2b508af82c08003ffd8187fbbfef4000299b58259541963f14
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a catalog, which is a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious. The primary IOC is the redirector URL, which likely leads to further malicious content or exploits.

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.ru/wb?keyword=catalogo%20avon%2011%202018%20pdf In PDF document text
    • http://files.mooseonline.ca/uploads/1/3/1/3/131398244/julawugunonoz.pdfIn PDF document text
    • http://files.lithgowagedcareltd.com/uploads/1/3/1/8/131856012/vudezagolanu.pdfIn PDF document text
    • http://files.hawaiioceanambassadors.com/uploads/1/3/0/7/130775126/193f1100a.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/1/0427/8029/5334/files/45585437604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/47159867736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuxovozukirofavekejob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/lofulam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5009/8085/files/77734473861.pdfIn PDF document text
    • https://solanimozo.files.wordpress.com/2020/07/48228174050.pdfIn PDF document text
    • https://xasarev.files.wordpress.com/2020/06/69531321860.pdfIn PDF document text
    • https://xavodurumumo.files.wordpress.com/2020/06/82238006737.pdfIn PDF document text
    • https://magapabiv.files.wordpress.com/2020/06/70744431924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/19967846757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3699/7794/files/90822610226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8145/6023/files/68305160358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2073/0011/files/99541580041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4380/5591/files/jifularinepanoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5275/2283/files/fusijozexow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/39208850750.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_off000059c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C6 5160 bytes
SHA-256: 549116e4eab8b5f0e6471040919d7b5c2fb13e8361ae15eaaca70f6fd167ab70
font_01_sfnt_off00006b72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B72 9168 bytes
SHA-256: 19fa069fe43444203bd31659d158892c7abe444751cd508dac8ad5ef8e53c628

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