Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed822a36b802362b…

MALICIOUS

PDF

41.8 KB Created: 2020-09-11 04:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44458d1de3781f377012d1693ec475c5 SHA-1: 6b9546cd5b133e2fb3b16205d37002100b442a87 SHA-256: ed822a36b802362bed28a51d8136991c42e3f395c457bdfeda5d114d2b6c6a17
120 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a "full crack" for Avast antivirus software, which is a common lure for malicious content. The link directs to a known malicious redirector, indicating a phishing or malware distribution attempt. The document also exhibits characteristics of a link farm, with numerous embedded URLs, further supporting a malicious intent.

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.me/wix?keyword=avast+antivirus+full+crack
    • http://files.rotterdamenglishspeakingtheatre.nl/uploads/1/3/2/8/132814343/4064905.pdf
    • http://files.geojaw.com/uploads/1/3/2/6/132681316/jegudufunit-kidexaxagagak-ririlenededanoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/fortune_lies_at_the_bottom_of_the_pyramid.pdf
    • https://cdn.shopify.com/s/files/1/0437/6051/7269/files/battlefield_2142_mega.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/blouse_ke_design_video_ing.pdf
    • https://cdn.shopify.com/s/files/1/0431/6751/4788/files/67715239950.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/dekijixujosufam.pdf
    • https://static.usrfiles.com/ugd/81d6a4_b45a1e5cae8f48c68727bff097bb79a6.pdf
    • https://static.usrfiles.com/ugd/078c79_c88b9ebbc77f4ebb98859978af09e820.pdf
    • https://static.usrfiles.com/ugd/769f78_10ccea33bc604e98afee98d0d6f7674f.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/
    • https://static.usrfiles.com/ugd/769f78_10ccea33bc604e98afee98d0

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006694.bin
1d21404ac7930fe68340a11da501706e0035483f066e8ad210b08dc9bc255872		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6694 4988 bytes
font_01_sfnt_off000077a5.bin
38344af01dff591ceb459837c1cf8ba67339e75940a1591827f7ebfa78fe910d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A5 10332 bytes

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