Malicious PDF — malware analysis report

Static analysis result for SHA-256 41c2490ab9d044b0…

MALICIOUS

PDF

46.5 KB Created: 2020-08-26 16:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 600c3721d40b61632bf5646c919a885b SHA-1: d25877e1de2ba7a37fa069c528423793f08e0070 SHA-256: 41c2490ab9d044b056bcecaa47311240d7292f7616c5fa5374e43ab62bb327d1
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though partially corrupted, contains the text 'Hvordan � lage mat fufu og suppe' and a URL pointing to a redirector, suggesting a lure to disguise the malicious intent. The presence of numerous links to Shopify domains, as flagged by PDF_SEO_LINK_FARM, indicates a tactic to artificially inflate search engine rankings for malicious content.

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=hvordan+%25C3%25A5+lage+mat+fufu+og+suppe
    • http://files.tweetyssweeties.com/uploads/1/3/2/6/132680974/basirok_zofovogizezafa_veragurevaz_misovaduvan.pdf
    • http://files.midcom-group.com/uploads/1/3/0/7/130775707/darewotubovaki_vorowepel_bewoxemeperal.pdf
    • http://files.obchaymarket.org/uploads/1/3/0/7/130740563/3700323.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/wogodolurunuxajolavi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0505/1029/files/82154734765.pdf
    • https://cdn.shopify.com/s/files/1/0428/7207/8499/files/10920520626.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4503/files/wunekijinipifogudodav.pdf
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/56432203745.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/best_travel_guide_to_andalucia.pdf
    • https://cdn.shopify.com/s/files/1/0437/7991/5937/files/oxford_bookworms_library_epub.pdf
    • https://cdn.shopify.com/s/files/1/0434/8834/6262/files/sebojudasa.pdf
    • https://cdn.shopify.com/s/files/1/0439/5024/3995/files/algebra_1_sol_review.pdf
    • https://cdn.shopify.com/s/files/1/0434/3716/2646/files/19149239994.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_off000068cf.bin
60221c680257206410cdfb3a19071c4a38e6f72c9ccef278a03a7c71bb8c730b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68CF 5520 bytes
font_01_sfnt_off00007af2.bin
bb766cd3d7ab5015834bc4c539dba19751a5b0b79334047540047a08ac100a0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF2 9956 bytes
font_02_sfnt_off00009cfb.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CFB 4324 bytes

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