Malicious PDF — malware analysis report

Static analysis result for SHA-256 3807425159f7063d…

MALICIOUS

PDF

51.9 KB Created: 2020-07-19 21:22:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93cff301cf2dd6106c79a5a77075f8b1 SHA-1: da3a7b708d9c7f7bd57036f9590b062bec2e6a77 SHA-256: 3807425159f7063dbd6955a428e2dee11d4388000bae73584edd57857c5360cb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a direct link to a known malicious redirector at ttraff.com. The document body is heavily obfuscated, preventing a clear understanding of its intended lure. The presence of a link farm and a malicious redirector strongly suggests a phishing or malware distribution attempt.

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/wb?keyword=derecho%20natural%20cristiano%20pdf
    • http://files.melissacastilloplanas.com/uploads/1/3/1/4/131437376/5635388.pdf
    • http://files.wfshootout.com/uploads/1/3/2/6/132695746/dalefax_gonisabaroxu_gezaxo_dilovuzazin.pdf
    • http://files.vocarsonchurch.com/uploads/1/3/1/4/131407965/nuputonewaza.pdf
    • http://files.washington-scottish.com/uploads/1/3/0/8/130874318/8b0f395751b7b3.pdf
    • http://files.farberresumes.com/uploads/1/3/2/6/132695574/6946660.pdf
    • http://files.farberresumes.com/uploads/1/3/
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/32923267679.pdf
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/wokofuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6176/files/tijuzurefiwerebakuz.pdf
    • https://zisiwemebix.files.wordpress.com/2020/06/kinobamodarowi.pdf
    • https://mozujunovuj.files.wordpress.com/2020/06/71795939425.pdf
    • https://remaxobiran480113780.files.wordpress.com/2020/07/94191842299.pdf
    • https://lavuxelo.files.wordpress.com/2020/07/44986571343.pdf
    • https://luraxowive.files.wordpress.com/2020/06/sijozamudaguwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niroduwo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/97777909095.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pusowa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28391359898.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5858/files/78516161259.pdf
    • https://cdn.shopify.com/s/files/1/0433/7798/3651/files/47043473524.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/samuwixezejezuba.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_off00008eef.bin
68fa0fa54392da30039f0c99447af89425503295b8c639ee2175964a611f12f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEF 5124 bytes
font_01_sfnt_off0000a04f.bin
3e8b458c07345842228970aaa96506c5ccb9538b44fd543497e6a1579d38c151		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA04F 10000 bytes

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