Malicious PDF — malware analysis report

Static analysis result for SHA-256 401564489766ca4a…

MALICIOUS

PDF

46.8 KB Created: 2020-08-05 02:27:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dea922ea8806f5fac9a032e699a5c08c SHA-1: 46fbbd0183c3fe3e4f4af84f385be74cc40f645f SHA-256: 401564489766ca4aa0a60b93784e4a28aced9f43f535751f140964f9031946f8
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link to 'ttraff.com' is identified as a malicious redirector. This suggests the document is designed to lure users into clicking the malicious link, likely leading to a phishing page or malware download. 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.com/pify?keyword=oxford+bookworms+library+stage+2+alice+s+adventures+in+wonderland+pdf
    • http://files.twincovesmedia.com/uploads/1/3/1/1/131164021/b7d6ebb9ab059e.pdf
    • http://files.picknrollnconnect.com/uploads/1/3/1/6/131606552/1950148.pdf
    • http://karujo.bethelkhrihfabu.com/uploads/1/3/2/7/132712615/piwibavele-ramubaxu-banulataba.pdf
    • http://files.bonniebcollier.com/uploads/1/3/0/8/130873902/xajojonuvazuju.pdf
    • http://files.sincereheadway.com/uploads/1/3/1/4/131483440/3127570.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9583/files/71035014512.pdf
    • https://cdn.shopify.com/s/files/1/0428/7057/1174/files/18230674656.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jexisobipa.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9459/files/dezodazunusud.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35209966956.pdf
    • https://cdn.shopify.com/s/files/1/0427/5883/2294/files/john_deere_4300.pdf
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/9423173745.pdf
    • https://cdn.shopify.com/s/files/1/0437/7860/5218/files/led_zeppelin_black_dog_tab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/sodurikepagiz.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ea9.bin
02bd81059fd96d8777d39242f7fe662d3104661e3d1858c36721a8b566ea4e3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EA9 7560 bytes
font_01_sfnt_off00006812.bin
9074c3609b3b788ed35a6f052041092b8a227c402b753f38692b14a8f03010f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6812 6044 bytes
font_02_sfnt_off00007cb0.bin
46142adbb5f69e17579974bbc8d718207b59761d5bfcffcb8410de1781f2864e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB0 10068 bytes
font_03_sfnt_off00009f23.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F23 4324 bytes

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