Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb697d827b0ec19e…

MALICIOUS

PDF

52.0 KB Created: 2020-08-06 15:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3def5089b014b7d7c31883210a2f833 SHA-1: 50197d99b2da124514720488c246bbde83f0c8c9 SHA-256: eb697d827b0ec19e030d7cf21a789632f2ec8f4557f938e264b62c6349d0b359
152 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector to a malicious URL, masquerading as a 'breakfast menu list pdf'. The ML classifier strongly indicates maliciousness. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploits.

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=breakfast+menu+list+pdf
    • http://batufuvel.instoredisplayuk.com/uploads/1/3/1/0/131070493/8868837.pdf
    • http://xegogozis.homestayadvisor.in/uploads/1/3/1/8/131871740/9327424.pdf
    • http://files.jasminkwan.com/uploads/1/3/1/4/131453248/kubomerebamel.pdf
    • http://files.madisonwidivorce.com/uploads/1/3/2/8/132814276/9dc0b8832.pdf
    • http://files.sisterhoodtravels.com/uploads/1/3/1/3/131378942/kinalezugotumo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2883/9586/files/wuwunujomazapamunugomin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1001/files/55221247649.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/bozikizotawif.pdf
    • https://cdn.shopify.com/s/files/1/0434/0485/3402/files/nisadotarix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54341666742.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/sisidomoxuvaxekedusa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8246/files/52249867468.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/word_to_converter_free_filehippo.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_off0000813c.bin
28751a8f1bbca4b3e96f209c1df3e3e575b368503f9d0513fc9b46533fb4978b
pdf-font-stream PDF embedded font (sfnt) at offset 0x813C 5072 bytes
font_01_sfnt_off0000925a.bin
fad986dc62ffcaebf608b005e4f3851ab42438c0265348bf75ee732425472842
pdf-font-stream PDF embedded font (sfnt) at offset 0x925A 10120 bytes
font_02_sfnt_off0000b4f4.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB4F4 4324 bytes