Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa9d31cbef875fd…

MALICIOUS

PDF

44.7 KB Created: 2020-08-08 08:53:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04dc84a55da6077458e09ee4ef9f8202 SHA-1: 86d67e2dfef89c390b6522ee43ffe45cb912f140 SHA-256: eaa9d31cbef875fd49259a24053729f0fa808c23bd15512eceb113a90d69cd8f
150 Risk Score

Malware Insights

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

This PDF file exhibits malicious behavior through a large number of embedded links, with one specifically pointing to a known malicious redirector. The presence of numerous external links suggests an attempt to manipulate search engine results or to distribute malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=persona+bergman+analysis+pdf
    • http://files.powerandhealing.com/uploads/1/3/0/7/130739275/967a2a7.pdf
    • http://files.museo-orlina.org/uploads/1/3/1/3/131380901/jonewulap.pdf
    • http://files.vk3sn.net/uploads/1/3/1/8/131871894/d40f274a4b81b4.pdf
    • http://files.foreverfinecollection.com/uploads/1/3/1/0/131071295/larukelitiku.pdf
    • http://files.decaturcountyworks.com/uploads/1/3/0/7/130775429/kifizoxolumupo_kezipolit_dogipukur_risofifazagug.pdf
    • https://cdn.shopify.com/s/files/1/0433/0756/5214/files/life_and_death_in_shanghai_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3575/3639/files/rodale_aquatic_center.pdf
    • https://cdn.shopify.com/s/files/1/0437/6277/8263/files/rivomiten.pdf
    • https://cdn.shopify.com/s/files/1/0440/1315/8565/files/cancer_de_pulmon_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/modern_approaches_to_the_study_of_political_science.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/bofap.pdf
    • https://cdn.shopify.com/s/files/1/0438/5298/8566/files/rutuwirigabewu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7704/2325/files/vamaxemunapobipaza.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/33842119839.pdf
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/boats_and_streams_problems_in_telugu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dd8.bin
a071be72d7ffba5dbf26267e75b6a4f6cb87d4b4c71ffdd6f3c5582324cb9f6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD8 5604 bytes
font_01_sfnt_off000080d9.bin
d03fe83391f822c609a401df63276b563e2a692cd790b96a18571a05aa64d608		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80D9 10580 bytes

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