Malicious PDF — malware analysis report

Static analysis result for SHA-256 e88563ec6d21daac…

MALICIOUS

PDF

42.1 KB Created: 2020-08-16 21:16:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: faf4ecd81614f329b6fc44b96ad2e9b0 SHA-1: 61f3d1ea49d1ad9d157755f973d09374b480638f SHA-256: e88563ec6d21daac885ed0500c21e74f29edf1638d16c2a3636b7fefaa9efc29
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting a lure for a 'free movie download', which aligns with the malicious redirector's purpose. The presence of a link farm further indicates a malicious intent to drive traffic to potentially harmful sites.

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=banjo+full+movie+free++hd
    • http://files.rusewood.net/uploads/1/3/1/4/131482886/jolifef.pdf
    • http://files.urasenkeurbana.org/uploads/1/3/2/8/132814276/vefijipubabit.pdf
    • https://cdn.shopify.com/s/files/1/0430/2641/5779/files/understanding_business_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/blouse_cutting_method_in_tamil_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/6345/8457/files/xiriruvagagoratizifepusi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/15026365832.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2951/files/19878185968.pdf
    • https://cdn.shopify.com/s/files/1/0433/5491/4981/files/begixojovepagipe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/calculus_early_transcendentals_11th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/59824282427.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_off00004ef0.bin
aec4324da88f4ee510bcd8231f19ea652deacf246cd26a6e7de3794a39b3762a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4EF0 5152 bytes
font_01_sfnt_off00006058.bin
5cde68fb8b8be9bb58aa0195cb09c47cf25e2b735ae9b857ad124c8badb60f13
pdf-font-stream PDF embedded font (sfnt) at offset 0x6058 11228 bytes
font_02_sfnt_off0000869c.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x869C 16164 bytes