Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf248e9341ea1c77…

MALICIOUS

PDF

49.5 KB Created: 2020-08-14 03:54:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8605f039122c87699c49b29d3f8c27c1 SHA-1: 501941f87cdf8b3009a8745629b14645937d3182 SHA-256: cf248e9341ea1c771bace3eb9fbf53bf3fcddf6caa01e35f4b9bb24566098868
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=de+jogos+para+android+4.+0'. This URL is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains the same redirector URL and text related to 'jogos para android 4.0', suggesting a lure to trick users into clicking the link. The presence of a PDF link farm heuristic further indicates malicious intent to distribute links.

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=de+jogos+para+android+4.+0
    • http://files.ngahealthcareconsulting.com/uploads/1/3/2/7/132711954/rudax.pdf
    • http://vubemelez.maltascalemodelshop.com/uploads/1/3/1/3/131380158/ripinuj.pdf
    • http://files.beevoice.net/uploads/1/3/1/0/131070845/bozipinuv.pdf
    • http://files.houseofmaxwell.com/uploads/1/3/1/8/131857734/3112134.pdf
    • https://cdn.shopify.com/s/files/1/0437/2175/2731/files/xutavibedideto.pdf
    • https://cdn.shopify.com/s/files/1/0430/3860/5461/files/funobenevuvirusufin.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/ayatoul_koursiyou_en_arabe.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/ketivirezudav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdf
    • https://cdn.shopify.com/s/files/1/0432/8597/1112/files/xukemulaniwoduxedekiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/85701135345.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/38036292009.pdf
    • https://cdn.shopify.com/s/files/1/0432/1961/5904/files/power_v_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/35599471928.pdf
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/26843308378.pdf
    • https://cdn.shopify.com/s/files/1/0428/5667/7543/files/wild_horses_the_sundays.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_off00007d99.bin
d23e75e119a596ad814f10c5eab524ab0f6d368f85fb364cba3b54943029bda5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D99 5432 bytes
font_01_sfnt_off00009045.bin
4b4ab91def6d452d95ac4b032803002b6a414c6cbba2a83f1ebae6e559fdf7cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9045 12808 bytes

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