Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea95c7000f386734…

MALICIOUS

PDF

56.2 KB Created: 2020-07-31 08:55:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39d5ef9af6f1cebfa3df26092080ffa8 SHA-1: 05426e26aaa648c23391f0c61101e1c9fc0b0017 SHA-256: ea95c7000f386734675074b1d9a9bd249995e906b6f1dd2faede7b1efcdc99cd
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'worship songs guitar chords pdf'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=worship+songs+guitar+chords+pdf
    • http://files.bennettwellness.com/uploads/1/3/1/4/131483318/zuvadufipijodisa.pdf
    • http://files.celshomes.com/uploads/1/3/0/7/130775759/2eb26f6b95.pdf
    • http://files.grandcelticpipeband.com/uploads/1/3/2/6/132681910/40dea29.pdf
    • http://files.walkersvillehistoricalsociety.org/uploads/1/3/1/8/131871717/zugenuw_xapukijere_xegug_kebesaza.pdf
    • http://files.rdcookingschool.com/uploads/1/3/1/3/131379543/naseduzaputadisi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/95742497235.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/11741157895.pdf
    • https://cdn.shopify.com/s/files/1/0437/3138/6529/files/mepilafu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9137/6794/files/vesokagawodab.pdf
    • https://cdn.shopify.com/s/files/1/0436/0765/4563/files/56208046298.pdf
    • https://cdn.shopify.com/s/files/1/0431/4926/3004/files/sukutijaje.pdf
    • https://cdn.shopify.com/s/files/1/0432/3636/0351/files/karitukuzezufutobude.pdf
    • https://cdn.shopify.com/s/files/1/0435/4854/1079/files/9548497346.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdf
    • https://cdn.shopify.com/s/files/1/0430/6406/6209/files/rorofanudofo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/dukaropa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4388/0103/files/boxet.pdf
    • https://cdn.shopify.com/s/files/1/0433/4072/6427/files/wukatufitefoli.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000095dd.bin
4abebc058c2882ca30886a7d49dc6267a6db65e7ead92a5b2f984464b2d26da3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95DD 5160 bytes
font_01_sfnt_off0000a75e.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA75E 1800 bytes
font_02_sfnt_off0000afec.bin
ae732d7b0602ab3d245812bd24796fbe9586cb755092c8a1aa7991411998e2a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFEC 10100 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.