Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae0be3ea22fe0f58…

MALICIOUS

PDF

51.1 KB Created: 2020-08-09 02:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30466b77e331cac9aca4cedcb309fea1 SHA-1: 6e02d2f5c48d6b3be0c64d6a640b7ee6e5f8cf53 SHA-256: ae0be3ea22fe0f581a1654bfae8cce87129d31fe69fee80d35b43753f6b87e3b
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=application+of+gis+in+environmental+science+pdf', which is flagged as malicious. This suggests the PDF is designed to redirect users to malicious content under the guise of providing an academic paper.

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.com/pify?keyword=application+of+gis+in+environmental+science+pdf
    • http://files.rubberdirect.net/uploads/1/3/2/3/132303083/567418535fe4.pdf
    • http://files.faroutfirstaid.com/uploads/1/3/1/6/131637308/rudenobif-dikexowav-vireguwuwidis-nebedot.pdf
    • http://files.jbmarbleandgranite.com/uploads/1/3/1/6/131606313/gozesavosizuzod.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/82056796815.pdf
    • https://cdn.shopify.com/s/files/1/0440/1725/4565/files/modelos_de_enlaces_quimicos.pdf
    • https://cdn.shopify.com/s/files/1/0433/9279/4774/files/wisirajawibamuru.pdf
    • https://cdn.shopify.com/s/files/1/0429/7588/7523/files/beduf.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/giwapu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4397/1484/files/bohemian_rhapsody_partitura.pdf
    • https://cdn.shopify.com/s/files/1/0434/1048/9496/files/basics_of_technical_analysis_investopedia.pdf
    • https://cdn.shopify.com/s/files/1/0434/5551/2738/files/fubebixaw.pdf
    • https://cdn.shopify.com/s/files/1/0440/1197/8902/files/pufidamimafigasokojuwulup.pdf
    • https://cdn.shopify.com/s/files/1/0438/1153/7053/files/87957994583.pdf
    • https://cdn.shopify.com/s/files/1/0431/7069/3282/files/60691229120.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_off00007cd3.bin
1625146f968c16fcf717ad806605201a7fb7a4d255cad55d5d7d021822180b70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD3 5312 bytes
font_01_sfnt_off00008ec4.bin
8f8c57fa5d08aab2d75efcc9ea28b737c62b19ccfdce84eb174041394291c12a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC4 9972 bytes
font_02_sfnt_off0000b0db.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0DB 4324 bytes

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