Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce0ff07411d6fe4b…

MALICIOUS

PDF

55.5 KB Created: 2020-08-24 04:10:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e40b517211d2dfae495c9518599d39b3 SHA-1: d50e5aab5fe4c20f5bacd0ce91beea826405e546 SHA-256: ce0ff07411d6fe4b893bbf81bf80e4c011b5a030fb71a1c476f6e918054946bb
154 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.ru' which is known for malicious activity. The document body, though partially corrupted, contains the text 'Carcinogens in food pdf', suggesting a lure to entice users to click the malicious link. The PDF structure and link farm indicate a likely attempt to distribute further malware or phishing content.

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=carcinogens+in+food+pdf
    • http://files.storymakerlife.com/uploads/1/3/0/7/130775511/beluxatitovexaxejej.pdf
    • http://files.kelly-johnston-art.com/uploads/1/3/0/9/130969046/wobomujonoda_kinibole_lazakatutorafaf_vefiga.pdf
    • http://files.cristinaperez.tv/uploads/1/3/1/4/131452949/7799315.pdf
    • http://gatunivum.allison-kiefnerburmeister.com/uploads/1/3/1/3/131398489/8446335.pdf
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/netimipiguvug.pdf
    • https://cdn.shopify.com/s/files/1/0437/1090/6518/files/71412919458.pdf
    • https://cdn.shopify.com/s/files/1/0430/5344/9367/files/40k_infiltrators_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/55659239214.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8727/files/kalodozaxoxolobapino.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/javaserver_faces.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8985/files/toralej.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7152/files/ridebomolezimomupo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/alkaloid_extraction_from_plants.pdf
    • https://cdn.shopify.com/s/files/1/0429/1035/1513/files/oceans_hillsong_chords_g.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7002/files/certificate_of_origin_uk.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6168/files/97480653119.pdf
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/57856925774.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_off00009256.bin
551fc6cf659c57c7917e7de455be94866b4ff9fb5d261c5f6678da16570a11c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9256 5196 bytes
font_01_sfnt_off0000a40c.bin
2455ccb4f6232dffa41a5af22719adfbd07e54c8ce861f2d1ac686697d8788d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA40C 14436 bytes

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