Malicious PDF — malware analysis report

Static analysis result for SHA-256 349b986045b229b4…

MALICIOUS

PDF

48.2 KB Created: 2020-08-23 03:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b148bec78ced18ea48de8d974b1fcd6b SHA-1: 2ef9238ed5b8fb7a4839e269b69c11812a7e50f1 SHA-256: 349b986045b229b41be462783a18352f13790dc8a42857a8c505fcabce5265fb
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a useful resource, but the primary link redirects to malicious infrastructure. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms this, and the ML_NYX_PDF_MALICIOUS score indicates a high probability of malicious intent. The document body text, though garbled, contains the lure text "Gantt chart template simple excel" and the malicious URL, suggesting a social engineering tactic to drive traffic to a malicious site.

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.ru/pify?keyword=gantt+chart+template+simple+excel
    • http://files.bhameconsoc.com/uploads/1/3/1/3/131379035/5d35b1ebe.pdf
    • http://pudodo.yabbadobrangus.com.au/uploads/1/3/1/3/131380550/3416402.pdf
    • https://cdn.shopify.com/s/files/1/0431/1285/7754/files/virtual_earth_worm_dissection.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tokavurovapipemekimisam.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/divisiones_de_la_ecologia_autoecologia_y_sinecologia.pdf
    • https://cdn.shopify.com/s/files/1/0430/1098/2041/files/24678004675.pdf
    • https://cdn.shopify.com/s/files/1/0436/9596/4314/files/14699972514.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/bed_box_springs_vs_platform.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/story_central_3_activity_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/9410/5509/files/nuzelirazamivitobadixin.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6716/files/riwuwofopozosaguxejiva.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/zulomuxafosozipunawo.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_off000075cd.bin
b403966aa03ccb74c6e45407f23c48ce063b8bee89aa045620cc21c9781b2a10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75CD 5272 bytes
font_01_sfnt_off00008785.bin
ee448ea0b942f8e3cc7ddfe0d5dc4c7c6f0a1a62bc92910c35c663b4662f014c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8785 2188 bytes
font_02_sfnt_off00009189.bin
a0d927791094be90fdb2542e6ce719ec295369402f93b73c30a3e4805b02eff0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9189 9996 bytes

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