Malicious PDF — malware analysis report

Static analysis result for SHA-256 b769bfee342bdca9…

MALICIOUS

PDF

54.5 KB Created: 2020-08-26 04:41:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbcd818fae4d23289972286286ec714a SHA-1: 641d8ab4e295622d3eb1ea04e3a6d767e319da75 SHA-256: b769bfee342bdca9e95c173363eb65e6fe96bc50afa31d30aa45b3dfcaecb79d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=free+editable+roadmap+template+for+ppt'. The document body, though heavily obfuscated, contains text related to 'free editable roadmap template for ppt', suggesting a lure. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=free+editable+roadmap+template+for+ppt
    • http://files.wickedladiesbeeco.com/uploads/1/3/1/0/131070291/5445640.pdf
    • http://files.themarkmckinnon.com/uploads/1/3/2/7/132740951/9190823ce4a37ac.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/9213802252.pdf
    • https://cdn.shopify.com/s/files/1/0437/3453/2245/files/teliribunojexusoles.pdf
    • https://cdn.shopify.com/s/files/1/0429/5422/7871/files/anlise_morfolgica_de_frases_exerccios.pdf
    • https://cdn.shopify.com/s/files/1/0430/9952/1178/files/mopig.pdf
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/jugozarikikog.pdf
    • https://cdn.shopify.com/s/files/1/0435/8501/1873/files/3d_modeling_software_free_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/87436365128.pdf
    • https://cdn.shopify.com/s/files/1/0435/1537/9880/files/riesgo_psicosocial_resolucion_2646.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdf
    • https://cdn.shopify.com/s/files/1/0431/3710/6087/files/vogeguxipu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6741/5457/files/green_supply_chain_management_definition.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_off00008bf1.bin
b3e7ab525b7a59cb8a9c5e699e08739354399da47ce5e7367c537645b4cab3af
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF1 4784 bytes
font_01_sfnt_off00009c2f.bin
e46d7e74b0b330e6e27fbdfb603b12d44cb0b9a79584145e5e617e15886bf4d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C2F 10060 bytes
font_02_sfnt_off0000be9b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE9B 4324 bytes