Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7fc45915b93be74…

MALICIOUS

PDF

42.1 KB Created: 2020-08-09 20:45:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd40ed09f48d29388b963479c179a647 SHA-1: 0b18e4b28334157b0d84561401fe721108b5fb9b SHA-256: e7fc45915b93be7496d0a17f4d01c684959176d9d40938cc0feecdeb84515760
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'factors affecting durability of concrete pdf' and a URL that appears to be part of a link farm designed to attract traffic. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring users to malicious sites via these embedded links.

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.cc/pify?keyword=factors+affecting+durability+of+concrete+pdf
    • http://fulej.genewhitacrecpa.com/uploads/1/3/2/3/132302939/9152a1eda5de.pdf
    • http://zufumiwag.livingthegoodlimelife.com/uploads/1/3/1/0/131070374/widudun.pdf
    • http://bufovuw.loyalseven.com/uploads/1/3/1/4/131454065/03672.pdf
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/thousand_miles_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/xebifo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8043/4342/files/mivodulofegodafa.pdf
    • https://cdn.shopify.com/s/files/1/0438/3748/9309/files/pebifuwaxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/carbonato_de_calcio_medicamento.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dogazuzotefoninu.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/1782504912.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/washington_capitals_schedule_2020.pdf
    • https://cdn.shopify.com/s/files/1/0439/4713/1035/files/19519484472.pdf
    • https://cdn.shopify.com/s/files/1/0433/3997/2773/files/simple_plot_of_metal_gear_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0432/4248/7976/files/43909396415.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/19031041924.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_off00006603.bin
38f32126faee8420e3c4a63ab93b6e1d9963e13696fa57edc246c2ec9fefa0a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6603 5520 bytes
font_01_sfnt_off000078d7.bin
e1c0525cadd537e07a2a618fcb52c40d2e49f9c1624e31f49ea1f0778ee1e266		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D7 10052 bytes

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