Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf72878b6718c7da…

MALICIOUS

PDF

43.7 KB Created: 2020-08-19 14:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeb662e75a45e87c36feb32a0f9d0a58 SHA-1: 44619caed3bfef5fdea1a794edaed93d38da98a9 SHA-256: bf72878b6718c7dab318473c35de86f27f97603a65f50bafc1aa95ef069789b2
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.cc'. This link is presented with a keyword suggesting a software download, indicating a lure for users seeking specific applications. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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=avg+pro+apk+latest+version
    • http://kotirudid.catherinegtripp.com/uploads/1/3/0/7/130740596/pekijizutiwatedomil.pdf
    • http://files.nancylarondajohnson.com/uploads/1/3/0/7/130738984/xoregupasokeb_lixuxagubafo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4993/files/86010265968.pdf
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/wowhead_blazing_drake.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0209/files/lapiso.pdf
    • https://cdn.shopify.com/s/files/1/0440/2518/4421/files/deguxa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nudukesobiji.pdf
    • https://cdn.shopify.com/s/files/1/0432/6329/5654/files/two_dimensional_array_example_program_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0431/5021/3274/files/58226735366.pdf
    • https://cdn.shopify.com/s/files/1/0432/5543/1323/files/discrete_mathematics_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/6350/8121/files/70641323829.pdf
    • https://cdn.shopify.com/s/files/1/0432/8833/0396/files/1337979830.pdf
    • https://cdn.shopify.com/s/files/1/0434/6114/8832/files/46834839327.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/rasukuxafuw.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/curriculum_mapping_example.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_off00006cbb.bin
05977d921ad3ca05c6b1d32762449a756a58dc74ec98da4e3685aee8269b62af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBB 5100 bytes
font_01_sfnt_off00007e33.bin
7ccac565c8b9dce4368a27344a584537f448527425a758f37168850a0bdd9d55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E33 10504 bytes

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