Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf6d8059c57b78f8…

MALICIOUS

PDF

34.9 KB Created: 2020-09-18 10:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b93a3dd6ae594d9e14c50f7dc063d880 SHA-1: bd3587c72dce48cc1516b46b7cce6742a91dc967 SHA-256: cf6d8059c57b78f8dac8e0c10aafe3e1d176d76466692ff7c4c2378e39dda3b2
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify, but one critical link directs to a known malicious redirector. The document body, though heavily corrupted, contains text fragments that appear to be search result snippets, including the URL for the malicious redirector. This suggests the PDF is designed to trick users into clicking the malicious link under the guise of finding a manual.

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.club/wix?keyword=soleus+air+conditioner+manual
    • https://cdn.shopify.com/s/files/1/0430/4856/6938/files/retiniworakidarupuzezubu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/carcassonne_discovery_rules.pdf
    • https://cdn.shopify.com/s/files/1/0434/5331/7272/files/oral_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0434/0695/0557/files/amory_lovins_reinventing_fire.pdf
    • https://cdn.shopify.com/s/files/1/0429/2873/4367/files/iris_sleeping_with_sirens.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/numulodoriwezaninarez.pdf
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/adhyaksha_in_america_kannada_film_songs.pdf
    • https://cdn.shopify.com/s/files/1/0432/9832/4638/files/rowifivalazubofu.pdf
    • https://5b5bd0b5-caff-4a86-bcf9-53403fe7352e.filesusr.com/ugd/2b25e8_f88a6b3dacb14207925835c205821f2f.pdf?index=true
    • https://f9dbbc02-b0f7-4c9c-a668-a4fabbb961fd.filesusr.com/ugd/8b49c6_42dc47201d2d4536995a90c53ae410e9.pdf?index=true
    • https://34414527-9b9f-42dd-b8e8-db5b5630cd18.filesusr.com/ugd/baa514_92d7c8f4fdc14294a94b5779ae49c087.pdf?index=true
    • https://1745996e-66ef-451c-bb35-fa5b6c8ca18a.filesusr.com/ugd/48f461_6126df1be5ab4ef7b3005e3d51c17e8b.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_off00004b9e.bin
f28ea38ee65f74527049ab5f9392b1a4c68f1489b15ec3a1b18166103e6a627c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B9E 5188 bytes
font_01_sfnt_off00005d25.bin
56af77ff84cba29994d237f7c1c3760e081feec5d788cb0ab1b3fdbd4ce77f15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D25 9924 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.