Malicious PDF — malware analysis report

Static analysis result for SHA-256 422aaf390e335182…

MALICIOUS

PDF

50.0 KB Created: 2020-08-10 08:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb983c5d5120547dac1b7b9e8116cd18 SHA-1: b891b895604954cf904bb3d9da95d4abdd20acdd SHA-256: 422aaf390e33518292c2913874a52caeb8e726a573841e2511ab8334dfff4657
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The heuristic firings indicate a PDF link farm and a malicious redirector, strongly suggesting a phishing or scam attempt. The primary malicious URL identified is https://ttraff.cc/pify?keyword=mimesis+auerbach+pdf+espa%25C3%25B1ol. The document body, though heavily obfuscated, also contains this URL and other Shopify links, some of which are confirmed benign and likely used to mask the malicious intent.

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=mimesis+auerbach+pdf+espa%25C3%25B1ol
    • http://files.dcmu.org/uploads/1/3/1/3/131378780/vudifibi.pdf
    • http://dusedafax.484sign.com/uploads/1/3/0/8/130874038/51fd7deec179.pdf
    • http://files.westernsafetyconsulting.com/uploads/1/3/0/7/130738889/6177529.pdf
    • http://files.dlrconstructionco.com/uploads/1/3/1/3/131398140/zutaxuli_lemiwigu_sifubogedufesak_gonev.pdf
    • https://cdn.shopify.com/s/files/1/0435/4395/3563/files/my_crown_fell_off_can_i_eat.pdf
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/53263124961.pdf
    • https://cdn.shopify.com/s/files/1/0437/7565/6094/files/79946267150.pdf
    • https://cdn.shopify.com/s/files/1/0448/6466/7810/files/berger_paints_color_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/57953931254.pdf
    • https://cdn.shopify.com/s/files/1/0432/4252/0739/files/babewotavitebedunifola.pdf
    • https://cdn.shopify.com/s/files/1/0436/0588/5090/files/jezogizibuximolaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/sonituziverobugevofixadu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/rekaw.pdf
    • https://cdn.shopify.com/s/files/1/0440/5516/7126/files/icc_certification_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0438/3657/1805/files/cateye_velo_7_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/65139516958.pdf
    • https://cdn.shopify.com/s/files/1/0430/5770/9210/files/luciano_canfora_tucidide.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_off000073ca.bin
e371f77567e1b398567c9234a5632cfd93a83056e39c72f83ae9526529c6173d
pdf-font-stream PDF embedded font (sfnt) at offset 0x73CA 5448 bytes
font_01_sfnt_off00008615.bin
0c213a5b6987c4bf02b2e0ff1728c75835c6d79b61f9da65a66d273a39f5ed65
pdf-font-stream PDF embedded font (sfnt) at offset 0x8615 11280 bytes
font_02_sfnt_off0000aab4.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB4 4324 bytes