Malicious PDF — malware analysis report

Static analysis result for SHA-256 d40adc53d4715804…

MALICIOUS

PDF

41.2 KB Created: 2020-08-06 12:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8c782e0316f5b4b215c8b48f2630d8f SHA-1: 3dc3cece50dcbdac16a2246aba19b57efdf0a029 SHA-256: d40adc53d4715804879eb340f47ba1c1c005f5e57d9edef3a8c4d988bf441641
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate documents, but one of the primary links redirects to a known malicious infrastructure. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL and several benign-looking URLs, likely to disguise the malicious intent. The primary malicious URL is https://ttraff.cc/pify?keyword=canary+wharf+shopping+map+pdf, which is used to redirect the user to further malicious content.

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=canary+wharf+shopping+map+pdf
    • http://files.equipoisemt.com/uploads/1/3/2/6/132695714/687ad0f8.pdf
    • http://files.styleshades.com.au/uploads/1/3/1/8/131856086/8865726.pdf
    • http://viduwop.newportplaza-tenant.com/uploads/1/3/0/7/130738779/wipiz.pdf
    • http://files.ashlandcountytowninsurance.com/uploads/1/3/1/3/131381900/59149385a8f.pdf
    • http://files.pilates-journey.com/uploads/1/3/1/6/131637606/paduririr_xudemolume.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/sadipuzeka.pdf
    • https://cdn.shopify.com/s/files/1/0429/1565/9942/files/administrative_management_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0447/9392/1685/files/8th_grade_graduation_speech.pdf
    • https://cdn.shopify.com/s/files/1/0432/1450/4093/files/71681825702.pdf
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/4764655729.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2233/files/how_do_i_push_code_to_github.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/52352456120.pdf
    • https://cdn.shopify.com/s/files/1/0432/3134/6856/files/48656181613.pdf
    • https://cdn.shopify.com/s/files/1/0435/4749/2506/files/periodic_table_song_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/6288/6554/files/23238037294.pdf
    • https://cdn.shopify.com/s/files/1/0428/6650/7942/files/76051948678.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_off000062cf.bin
bb087a01beb6708ed10be1c17dbaddfdca1711af0c86ad5f41b794ad8e1f74f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 5524 bytes
font_01_sfnt_off00007589.bin
5ec91a9151d54428819db00f48a85e06da6c9d1d92ea98bd51c640e0788840a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7589 10120 bytes