Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01d6c5832d55e35…

MALICIOUS

PDF

44.5 KB Created: 2020-08-09 17:39:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33650e72cbd1b46e165096a7bfbce596 SHA-1: c6aa5ac4fc90ea14c640e492f9f5b51f4afa6741 SHA-256: d01d6c5832d55e35c11fb124e1438077be9707b9e4cec14283d77054479118b5
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=all+about+skin+care+pdf'. Another critical heuristic flagged the PDF for containing a large number of external links, suggesting a link farm for SEO poisoning or traffic redirection. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking Shopify URLs, likely used to lend legitimacy.

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=all+about+skin+care+pdf
    • http://files.bberidesserts.com/uploads/1/3/1/6/131637498/taketepifaju_labiweraluzax_wonewomab_gaporupajomet.pdf
    • http://files.utadrc.org/uploads/1/3/0/7/130739996/gipusavaf-furutum-zatizozadix.pdf
    • http://files.firebirdnewzeal.org/uploads/1/3/0/7/130739996/7942514.pdf
    • http://files.markusfx.com/uploads/1/3/1/6/131637108/zakevup.pdf
    • http://files.maidenlanecommunitycentre.org/uploads/1/3/1/4/131483317/035c29529806f4f.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/vazubupusulesino.pdf
    • https://cdn.shopify.com/s/files/1/0436/0637/6611/files/echographie_de_l_appareil_urinaire.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/xajap.pdf
    • https://cdn.shopify.com/s/files/1/0434/3257/5132/files/zeruzisezojegi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6187/0746/files/goripulatikazaxaja.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17232613021.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/43921223808.pdf
    • https://cdn.shopify.com/s/files/1/0433/1316/8542/files/98002447154.pdf
    • https://cdn.shopify.com/s/files/1/0436/9963/4326/files/libelejawer.pdf
    • https://cdn.shopify.com/s/files/1/0434/2782/3765/files/31700316762.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_off00006187.bin
5b5c5a75a70dc3b59319cc7e6e5f03d44e8ccce56c45ca879101e665ab281696		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6187 5224 bytes
font_01_sfnt_off00007349.bin
c396c0f1ee61e04e27eed09f7684e039b97d42800dcdf1b3596c79fdfc6e5b4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7349 10480 bytes
font_02_sfnt_off00009726.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9726 4324 bytes

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