Malicious PDF — malware analysis report

Static analysis result for SHA-256 26b2fffc42882e34…

MALICIOUS

PDF

53.6 KB Created: 2020-08-19 10:37:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a4229825e047e2f6323f1804bf5422b SHA-1: 1738cf66c6300982760e3541548bb13955bbeed9 SHA-256: 26b2fffc42882e3499ef641e522d782ffc7839e0b218b91e5285887ee711f287
152 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to a known malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, suggests a lure related to a 'solid waste management project report'. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, many pointing to Shopify domains, likely to obscure the malicious redirector. No scripts were extracted from this sample.

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.cc/pify?keyword=solid+waste+management+project+report
    • http://povije.maranathaworshipcenter.com/uploads/1/3/0/7/130739919/117738c.pdf
    • http://bitowodud.museautoproject.com/uploads/1/3/1/6/131607163/wanifanib.pdf
    • http://files.moco-bay.com/uploads/1/3/1/4/131452750/9211065.pdf
    • https://cdn.shopify.com/s/files/1/0431/1118/6585/files/happy_birthday_song_with_name_zubair.pdf
    • https://cdn.shopify.com/s/files/1/0432/1119/4525/files/8594024558.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/6965210923.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vekedexixerokasadoboma.pdf
    • https://cdn.shopify.com/s/files/1/0441/2683/0744/files/cessna_172_pilot_operating_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73792904944.pdf
    • https://cdn.shopify.com/s/files/1/0436/4717/2768/files/zibogovawefefejimafitebi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6630/files/benign_fasciculation_syndrome_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0429/5009/9107/files/fatozawavomesesanexu.pdf
    • https://cdn.shopify.com/s/files/1/0440/4215/8245/files/siwuxobotilufuluvodevari.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8554/files/jugogefolowi.pdf
    • https://cdn.shopify.com/s/files/1/0440/5549/4806/files/70898140705.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70838758317.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_off000093a6.bin
b25ebf71810804d53e37fda471eec1af80c837c7c36549a4208b2711857ea6b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x93A6 5664 bytes
font_01_sfnt_off0000a6e8.bin
0c7f805ce4826035fc4fc009002ddbbf7842dc2aa006aad234fa765309f7f14a
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6E8 10100 bytes