Malicious PDF — malware analysis report

Static analysis result for SHA-256 42b188bb318a97a7…

MALICIOUS

PDF

43.4 KB Created: 2020-08-18 16:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 486c66aa2dba43371003329ddc9b8615 SHA-1: e57ae1e96d8a306ca032e5a9dcd2228c5792a19b SHA-256: 42b188bb318a97a7b498de320c0e7ab5b08f84e0f7f3b193ad9adbfc693e4945
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=nomenclatura+das+amidas+pdf.

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=nomenclatura+das+amidas+pdf
    • http://tunegot.photoelectricsynergy.com/uploads/1/3/0/8/130873782/9e316.pdf
    • http://jofumu.banderaarchitecture.com/uploads/1/3/1/4/131437914/22a3be0883.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8711/files/16304449356.pdf
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/definicion_de_placa_bacteriana.pdf
    • https://cdn.shopify.com/s/files/1/0437/6897/1415/files/52584625196.pdf
    • https://cdn.shopify.com/s/files/1/0441/1644/3288/files/bathukamma_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0440/7132/1752/files/56501033186.pdf
    • https://cdn.shopify.com/s/files/1/0437/8951/6962/files/26511862230.pdf
    • https://cdn.shopify.com/s/files/1/0434/6963/5734/files/pabadekaxefosalom.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/gukerukagalopusigoju.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_off00006a19.bin
eff960c83a26bd139e90df813f79a1a3af3a53ae6e143e7ea45042f70a275536		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A19 5268 bytes
font_01_sfnt_off00007bea.bin
5445febd7190778ad4f6b742e1a456defe9fa4b53bc126cbee3747b6a2244070		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEA 10940 bytes

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