Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6b0b7e7c2f59a6…

MALICIOUS

PDF

34.6 KB Created: 2020-09-19 16:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22b15deb976f8eea0392f3fbbbe8886b SHA-1: 80b1eacff371ed2bb53c0dff9e4cfeb2916dafdb SHA-256: 2b6b0b7e7c2f59a64187da41805b3a518410b5e73a1c6402710cf97d071218b1
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Cat in the Hat movie games online' and includes the malicious URL. The PDF_SEO_LINK_FARM heuristic further suggests this PDF is part of a link farm designed to attract traffic.

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.me/wix?keyword=cat+in+the+hat+movie+games+online
    • http://files.lindleyroadhouse.com/uploads/1/3/0/7/130775737/b8acf45.pdf
    • http://tatun.zigzaganalytics.com/uploads/1/3/1/1/131164269/9729560.pdf
    • http://mavipeb.lfsdfremont.com/uploads/1/3/0/7/130740000/lobevibe.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/79061286344.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1346/files/7989900254.pdf
    • https://cdn.shopify.com/s/files/1/0431/7613/2774/files/cooks_essentials_pressure_cooker.pdf
    • https://cdn.shopify.com/s/files/1/0437/5589/6983/files/59053769501.pdf
    • https://e2d57bc1-0c48-4667-839d-3449b5308a46.filesusr.com/ugd/3ce946_087332c556a849fc88b7f49b1b97731a.pdf?index=true
    • https://18f0da8c-5c31-4a6c-a5f0-59433ac9bdb3.filesusr.com/ugd/0049ca_0a9cc54e07dd48a98f737386845e0f76.pdf?index=true
    • https://8ea2c8e6-f04f-4eec-b8d4-44a949a88f73.filesusr.com/ugd/011e4b_89ccaa0fdeca4150a09511c28d3c13f1.pdf?index=true
    • https://9b24d90a-651b-4aea-939e-6ad4d91e6024.filesusr.com/ugd/7aabb2_29905b7a833042da9799c314792cc057.pdf?index=true
    • https://3a6e48dc-5671-4799-bd94-dda7b3bb7356.filesusr.com/ugd/01d500_29492f9088094ef887e6acda7f1dc718.pdf?index=true
    • https://ca26745e-5814-477d-9534-a79333b0ed29.filesusr.com/ugd/79e0dc_4e99b5468e4447d8986253a017f7af32.pdf?index=true
    • https://3d7b275a-831c-4db1-babd-c1a55324e6da.filesusr.com/ugd/ea2f88_1f80e5cc972d4b78ae6a16114c0804e7.pdf?index=true
    • 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_off00004a98.bin
e04cdd1d21de200e41cefb95b6b3c036b1c17d65fdaf8ce4a3a729263a54eff0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A98 4968 bytes
font_01_sfnt_off00005b61.bin
eed299d2e5df4ed02e9a729a72f9de780614fd7dbf1131bab1e868815e910241		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B61 10064 bytes

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