Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4b0636f6a909d75…

MALICIOUS

PDF

72.8 KB Created: 2020-08-29 02:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 596977f42ee6bdd83d1203cf4887c7d7 SHA-1: 2662803aabdf0331ca7fae4de90d92881760f88a SHA-256: b4b0636f6a909d759a1917f544a6d6b82407859f799bbb31e0a62420cf744cd0
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains a reference to 'death note full movie download' and a call-to-action phrase, suggesting a lure for malicious content. The presence of a link farm further indicates an attempt to distribute malicious content or SEO spam.

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.ru/wix?keyword=death+note+full+movie+download
    • http://deathnote.downloa
    • https://static.usrfiles.com/ugd/b8c837_e7dec993685842a59996048e02d31b77.pdf
    • https://static.usrfiles.com/ugd/b8c837_03be4575ee3648818c565a283653d3cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c190fe43cec48ebbce9dadd8e72c2b7.pdf
    • https://static.usrfiles.com/ugd/b8c837_d14c48d4c1664a3da4a58274d6d36e87.pdf
    • https://static.usrfiles.com/ugd/b8c837_457ade6a008a4692896bb1981fb0900a.pdf
    • https://static.usrfiles.com/ugd/b8c837_ac53635124eb441db042ed01f2acdd7a.pdf
    • https://static.usrfiles.com/ugd/b8c837_b7f0dcd2498b4ed391d20b788fddc300.pdf
    • https://static.usrfiles.com/ugd/b8c837_72fcf04969e24c2fbaec118d39783b56.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e0823010ef84d159ac91ae40d069f73.pdf
    • https://cdn.shopify.com/s/files/1/0433/4800/0927/files/nakuzijaneporesufevalivi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/37603258402.pdf
    • https://cdn.shopify.com/s/files/1/0435/2661/9300/files/afficher_les_formules_excel_2016.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b78f.bin
784feb9ee3b67a6a0a1a1f6ae82e8d425212e68cfd60ae3c8121696fbd3f06cc
pdf-font-stream PDF embedded font (sfnt) at offset 0xB78F 5792 bytes
font_01_sfnt_off0000cb7b.bin
ac7655086ae5017715b737ec49cb1bd1f1f7fc484b7e47964f8f5bec55eaa143
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB7B 4904 bytes
font_02_sfnt_off0000dc16.bin
46531497577496032139c32db4261f9310aaf822ca3d2903e88b7281c4d1f8ba
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC16 13664 bytes
font_03_sfnt_off000107e6.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x107E6 4324 bytes