Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6d52dbe04ae92ef…

MALICIOUS

PDF

44.3 KB Created: 2020-08-18 15:19:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd98e016431b0c947e58935c4d48c8db SHA-1: e0fe68b3937d32b087274343e472f61809e0d854 SHA-256: c6d52dbe04ae92ef9db102c87b060b04cf070b884d8a151c92b87138ebdc75c4
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download for 'Microsoft chess titans for windows 10'. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the link leads to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger link farm, suggesting a phishing or scam campaign. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of the file.

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=microsoft+chess+titans+for+windows+10
    • http://files.fcpsartsacademy.org/uploads/1/3/1/3/131382808/943b37c.pdf
    • http://joguz.itchyfeetfamily.com.au/uploads/1/3/1/3/131383483/9880702.pdf
    • http://files.theschenectadytradingcompany.com/uploads/1/3/0/7/130775084/d79f366213a04e.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/wofexepenijeragema.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/psychology_class_11th.pdf
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/98369681135.pdf
    • https://cdn.shopify.com/s/files/1/0431/5466/9729/files/98289347251.pdf
    • https://cdn.shopify.com/s/files/1/0440/0755/5222/files/walk_through_walls_fire_red.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/pvc_roof_insulation_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/42749990915.pdf
    • https://cdn.shopify.com/s/files/1/0432/4727/2098/files/jenigipiguwevemad.pdf
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/lol_morgana_support_guide_german.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_off0000606b.bin
777e203e1241e104bd3ac6d40298ca10a3ffcb3447c8e8a2f03ccd0da092ed86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606B 5156 bytes
font_01_sfnt_off000071f6.bin
ab496e9c1a84370bb0d7f2d447bd1c7600cd343f189cfef3d8b629ec1299283e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F6 10916 bytes
font_02_sfnt_off0000966c.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x966C 4324 bytes

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