Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee664629f420946…

MALICIOUS

PDF

47.4 KB Created: 2020-08-14 06:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d500a79a9474eb156df3bffc4bad71cc SHA-1: 91079249ed9166069401dad764b481f24f3ee8d7 SHA-256: 0ee664629f4209465220bfe3c752643a06d950e1afe80fcfb20ec4ffde684ce4
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious content. The primary redirector URL is identified as malicious. While no scripts were extracted, the PDF structure and embedded links suggest an attempt to lure users to external sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/pify?keyword=2018+ford+mustang+gt+automatic+vs+manual
    • http://files.sinai-horeb.com/uploads/1/3/1/4/131437061/wajeva_firelanenediro.pdf
    • http://wokuw.coalitionforsafeschoolsnyc.org/uploads/1/3/0/7/130739967/98991c3aa436.pdf
    • http://files.bentonwcedc.com/uploads/1/3/2/6/132681409/rozudot-bogusajogar.pdf
    • http://files.aviewoflondon.com/uploads/1/3/0/7/130776489/9117492.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/jitifowafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/57495945268.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wurawosupamajo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1184/1949/files/46868346560.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/79191276411.pdf
    • https://cdn.shopify.com/s/files/1/0428/3305/1814/files/pevafofalisutunurifigafu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/nofekagibutuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/gupir.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/86017326619.pdf
    • https://cdn.shopify.com/s/files/1/0435/7256/0033/files/faa_8050-_2.pdf
    • https://cdn.shopify.com/s/files/1/0440/7679/4021/files/85789141819.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007915.bin
6ed9ba71c3aeb4b74b2443f3723c6c6e0f99f898a47d8716660cd9c9bfa9a8db
pdf-font-stream PDF embedded font (sfnt) at offset 0x7915 5824 bytes
font_01_sfnt_off00008cc8.bin
692fb3288a75946b159c7ec13084109e3f935caf1b475a0fd29c9a9d8ad0a19d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC8 10420 bytes