Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60854bc630b8b0d…

MALICIOUS

PDF

44.5 KB Created: 2020-08-07 09:22:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c3f1e2d819232c3d98838d84d0eda5a SHA-1: 8fe830a391897deb48bd30fb5da5d9404c20ef7c SHA-256: f60854bc630b8b0d5e48a75b05174ff7ef4051a40d2122e4958e82f2e1d9b984
152 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains the text 'Introduction of food adulteration pdf' and a URL that appears to be part of this lure. The ML classifier strongly indicated maliciousness, and the presence of multiple external links points towards a delivery mechanism for further malicious content.

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.com/wb?keyword=introduction%20of%20food%20adulteration%20pdf
    • http://dijox.kimberleykleczka.com/uploads/1/3/0/9/130969742/sibap_juxowipeka.pdf
    • http://files.itsablessedlife.net/uploads/1/3/0/8/130874160/8448158.pdf
    • http://files.ibnsinagroup.com/uploads/1/3/1/4/131407292/8349375.pdf
    • http://files.sastinson.com/uploads/1/3/1/6/131637853/7731380.pdf
    • http://files.dzamarie.com/uploads/1/3/0/9/130969488/lufagififa-jolanebaxajaz-nidekewozi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1341/3786/files/nuvudupinadivomuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/5842/9078/files/4420354438.pdf
    • https://cdn.shopify.com/s/files/1/0427/7266/0390/files/kegunogado.pdf
    • https://cdn.shopify.com/s/files/1/0433/5697/9351/files/achenbach_child_behaviour_checklist.pdf
    • https://cdn.shopify.com/s/files/1/0428/6958/8127/files/dedugefijareduj.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/63236404362.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8182/files/does_brook_ayers_have_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0428/5317/1356/files/43223692186.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/64426021662.pdf
    • https://cdn.shopify.com/s/files/1/0430/6812/9431/files/dumizepiratixixene.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/autocad_to_converter_free_download_online.pdf
    • https://cdn.shopify.com/s/files/1/0436/7260/0726/files/55386970875.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000650e.bin
62d8ab90c8fcd401f967e1ebcb0fcc03d65b106004f3049ccb15f321966f759d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650E 4792 bytes
font_01_sfnt_off00007559.bin
4ae8510ffb3ecb43ddf640d3413c6f8b0c687ba411d786337382d4b251d58866		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7559 9804 bytes
font_02_sfnt_off000096df.bin
8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96DF 4324 bytes

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