Malicious PDF — malware analysis report

Static analysis result for SHA-256 dec00c524fa5add9…

MALICIOUS

PDF

40.6 KB Created: 2020-08-22 19:29:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47460899d703a641a1209a52d07a4e81 SHA-1: 579fc6f49fe410cdffd121d261feeed8d8e2ab9a SHA-256: dec00c524fa5add93de97734a49612e80c51a74b4cdb5e9713b30109e1885ddb
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.com/pify?keyword=cameroon+tribune+pdf'. This indicates a phishing or social engineering attempt to direct users to malicious content. The file also leverages numerous Shopify-hosted PDF links, likely as part of a link farm to improve search engine ranking for malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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.com/pify?keyword=cameroon+tribune+pdf
    • http://files.hannahhamza.com/uploads/1/3/2/6/132695354/604d698448e13af.pdf
    • http://files.alloriefeekes.com/uploads/1/3/1/3/131379545/zuxibozom-soselat-wawifumodavu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5846/1863/files/abrasive_jet_machining_video_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/1330/6530/files/50373606282.pdf
    • https://cdn.shopify.com/s/files/1/0431/1616/7319/files/history_of_forensic_anthropology.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/metrics_and_measurement_worksheet_answers_page_7.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/47883401166.pdf
    • https://cdn.shopify.com/s/files/1/0432/2548/1379/files/biology_campbell_chapter_1.pdf
    • https://cdn.shopify.com/s/files/1/0434/9489/9864/files/56980895281.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6582/files/34546495662.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/adobe_place_signature_greyed_out.pdf
    • https://cdn.shopify.com/s/files/1/0433/2548/9305/files/life_cycle_of_ascomycetes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/dumilafabubevavirafan.pdf
    • https://cdn.shopify.com/s/files/1/0430/6970/2306/files/74921257144.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_off00006311.bin
ccdaa2a61f8413e08a318be321d6f4a3b2a5d7659c247c39008cc24c5868b0e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6311 5024 bytes
font_01_sfnt_off00007400.bin
847a709b9afee534b982a220c5946c0196ce38069a482446d7bffd285910c46d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7400 9816 bytes

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