Malicious PDF — malware analysis report

Static analysis result for SHA-256 94f9a81f0bcf7f92…

MALICIOUS

PDF

39.6 KB Created: 2020-08-18 19:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 236457cdc8a8135c824a291bb4121e90 SHA-1: 64a6e60e4b9e7a102b88fe6d83809ef807746f57 SHA-256: 94f9a81f0bcf7f92c39e936666788614207508d6db9d956c0b2bd98829064e97
154 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 pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary intent appears to be directing users to malicious infrastructure through deceptive links.

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=android+phones+no+contract
    • http://funejaki.stavangerfitness.com/uploads/1/3/1/3/131379578/tunusedodurexafol.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3163/files/xexobi.pdf
    • https://cdn.shopify.com/s/files/1/0438/6983/1323/files/allen_key_bolt_size_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/porovurujapiganipuzul.pdf
    • https://cdn.shopify.com/s/files/1/0433/7605/0330/files/tilelagimuforuraz.pdf
    • https://cdn.shopify.com/s/files/1/0430/5145/0519/files/applied_mathematics.pdf
    • https://cdn.shopify.com/s/files/1/0436/9691/4600/files/vazifasemelizoze.pdf
    • https://cdn.shopify.com/s/files/1/0437/0504/1051/files/89467638307.pdf
    • https://cdn.shopify.com/s/files/1/0431/3271/5163/files/keto_cookbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/solikorijabe.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_off00005c6c.bin
adff2b548bcd5dc07aae6512fe10d24fa6d8625992d461becf9b1c6b40c03c1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6C 5116 bytes
font_01_sfnt_off00006dbf.bin
ad586d9a3b579d0686416914726645ea55f270b090c48f71c16fc7e4a34c3ca3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBF 10772 bytes

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