Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c5bbb47dca3f59…

MALICIOUS

PDF

45.1 KB Created: 2020-07-30 20:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f966fa0875264a96a32a05090e86b403 SHA-1: 7c9ad8a532d9c1a9b5ee413acd677ac9daacb009 SHA-256: 93c5bbb47dca3f59b5c403e0232fccf7cfb7db54c646a0eac3c176c955a93c0c
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which points to 'ttraff.cc'. This URL is likely used to lure victims into downloading further malware or engaging in fraudulent activities. The document also contains a large number of embedded links, many hosted on Shopify, which is characteristic of SEO-based link farm techniques used to distribute malicious content or improve search engine ranking for malicious sites. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=data+structures+and+algorithms+in+java+for+beginners+pdf
    • http://files.comobnp.org/uploads/1/3/1/3/131398515/rozajizovaka.pdf
    • http://files.cninc.org/uploads/1/3/2/7/132740479/5324237.pdf
    • http://files.liminalstudies.com/uploads/1/3/1/0/131069886/pobutozovat-xobipamizu.pdf
    • http://files.mysmellysocks.com/uploads/1/3/0/8/130874162/dcf54632367f2.pdf
    • http://files.psychosocialresearchgroupunsw.org/uploads/1/3/2/7/132741081/rizetid.pdf
    • http://files.liminalstudies
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/kegarorojexatipesag.pdf
    • https://cdn.shopify.com/s/files/1/0430/5993/7434/files/gufozifoxubuligejegami.pdf
    • https://cdn.shopify.com/s/files/1/0430/9945/5642/files/xowumagobatis.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/43466023521.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wonazonuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/kubanope.pdf
    • https://cdn.shopify.com/s/files/1/0436/7345/2697/files/ruvewafizizo.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6525/files/pamapaxuvodojoroted.pdf
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/89204881639.pdf
    • https://cdn.shopify.com/s/files/1/0440/8174/1976/files/83936585540.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/gulin.pdf
    • https://cdn.shopify.com/s/files/1/0433/5792/9622/files/48630715060.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81256704061.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_off0000713e.bin
c324494ae3dd70f1adcbccf41ad549926f640875fe6df196e5ec9abdfc3607b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x713E 5724 bytes
font_01_sfnt_off0000848e.bin
d65c634f02612efb46a94ce8df6aa660068a6e88ada43802bfddf02b0c209e0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x848E 9980 bytes

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