Malicious PDF — malware analysis report

Static analysis result for SHA-256 e145f552c54d049d…

MALICIOUS

PDF

39.9 KB Created: 2020-08-21 12:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8606e14216c4983d486b145364e95d3 SHA-1: c811c41da82f998c204d889facce8d225ec547be SHA-256: e145f552c54d049dadaed3ef0b625dc6e869f7b9ab11e56d55f2bd86b584ca35
154 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body text, though partially corrupted, includes the phrase 'Chp traffic collision report 555' and the malicious URL, suggesting a lure to trick the user into clicking the link. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, further supporting the malicious intent of redirecting users to potentially harmful content.

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=chp+traffic+collision+report+555
    • http://files.grindforatime.com/uploads/1/3/1/3/131380297/4035025.pdf
    • http://burajiv.doggievilleranch.com/uploads/1/3/0/7/130739564/ba34539bad04e11.pdf
    • https://cdn.shopify.com/s/files/1/0434/3532/7653/files/pujaderubolufenowikosixe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4290/6007/files/blender_3d_modelling_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/3208/3612/files/zadafif.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/best_3rd_party_transformers_masterpiece.pdf
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/enlightenment_now_audiobook_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/0998/1085/files/lrtemplate_to_dng_app.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6731/files/wukajexanolupinowan.pdf
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/chevrolet_beat_spare_parts_price_list.pdf
    • https://cdn.shopify.com/s/files/1/0440/7502/4549/files/supra_ngritude.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/62813730624.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_off0000602a.bin
a2f12889e0ac8b280e07b1ea0100b2cf4b11c3b19de2ac4e342eded2e47433f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x602A 5132 bytes
font_01_sfnt_off00007198.bin
1de3bcd90d87cdf38553968b97eb1feb4402dc72be13572142d324ae371357a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7198 9796 bytes