Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ddcca42d6d555ac…

MALICIOUS

PDF

43.6 KB Created: 2020-08-18 14:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69d7ed79ae13293dea6fcbc51f695cc4 SHA-1: 9c09206d284faa680219aab0238a5c2973fb494c SHA-256: 2ddcca42d6d555acb862549146b46b51060d8beddbfd6de2f60a6f1ebf5e62d1
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to domains that appear to be part of a link farm. One of these links, 'https://ttraff.cc/pify?keyword=handmade+gift+certificates+templates', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a lure to download further malicious content or redirect to phishing sites. The presence of a download button heuristic further supports the social engineering aspect.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=handmade+gift+certificates+templates
    • http://files.valerielongencaustic.com/uploads/1/3/1/0/131070792/4496ee.pdf
    • http://files.mrckc.org/uploads/1/3/1/8/131856624/matamawov_gitabunijak_xuzed.pdf
    • http://files.hhslmc.com/uploads/1/3/2/6/132696112/nokuviwivaruwajutek.pdf
    • http://files.sacredrainhealing.com/uploads/1/3/0/8/130874566/nadunilu_xuvumeni_ziromivabibanis_wunoxeri.pdf
    • http://files.launcestonmountainbikeclub.com/uploads/1/3/2/6/132695586/b62e817ba84ed5c.pdf
    • https://cdn.shopify.com/s/files/1/0436/5733/0853/files/26975473937.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2310/files/gevuwomobovuzatinijetok.pdf
    • https://cdn.shopify.com/s/files/1/0434/2274/4741/files/34254617931.pdf
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/warframe_kubrow_breeding.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/speed_and_agility_workouts_for_basketball.pdf
    • https://cdn.shopify.com/s/files/1/0434/0839/2353/files/79944807403.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/58901803940.pdf
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/39443433131.pdf
    • https://cdn.shopify.com/s/files/1/0438/7930/1288/files/an_enthusiastic_gilled_blob_is_on_screen.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/77430183935.pdf
    • https://cdn.shopify.com/s/files/1/0440/5536/3734/files/daxogipidemexoj.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_off00006a9a.bin
635105be7aeb2d8bd5246ad6bfda713a07a570f20e2dd588361a51275fa8ca96
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9A 5436 bytes
font_01_sfnt_off00007cfb.bin
154bf67e4af10a962d297fa8f0a1224b1d854c435ec3a526424b6a5a06e40d88
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFB 10504 bytes