Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d54e9417548276…

MALICIOUS

PDF

143.5 KB Created: 2020-08-03 14:20:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ecef17d26da4d1b4187ee009d5448a2 SHA-1: f3b0911c11bb5cab221cfb04791f14c12133ac58 SHA-256: d6d54e9417548276567b5f2cd59df83505f30267e53d2e3ed2e3d1e75efd5ee9
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The presence of a 'download button' heuristic and the embedded URL suggest a social engineering lure to trick the user into clicking the link. The redirector URL is likely the first stage in a download or phishing chain.

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.com/pify?keyword=bengali+letter+writing+book+pdf
    • http://files.almeria-estates-and-realty.com/uploads/1/3/1/4/131437351/fefozo.pdf
    • http://files.forgottensheep.net/uploads/1/3/1/1/131164567/kowezinu-jujubobevaxavu-widudalofupison-savoxejuga.pdf
    • http://files.tacomaartistlofts.com/uploads/1/3/1/4/131409170/3856322.pdf
    • http://files.kirkreview.com/uploads/1/3/1/4/131409037/7123115.pdf
    • http://files.ragademalion.com/uploads/1/3/1/8/131857756/xomor.pdf
    • https://cdn.shopify.com/s/files/1/0435/4729/5898/files/rewizumataxilopojek.pdf
    • https://cdn.shopify.com/s/files/1/0430/6570/4599/files/16950648233.pdf
    • https://cdn.shopify.com/s/files/1/0434/8729/7696/files/65662099743.pdf
    • https://cdn.shopify.com/s/files/1/0428/6965/3663/files/relabegupoxunat.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/jufazixesovevawus.pdf
    • https://cdn.shopify.com/s/files/1/0437/3938/1912/files/dirumojojuvagamonorejapiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/71176851745.pdf
    • https://cdn.shopify.com/s/files/1/0434/2883/9586/files/xavedavowusutovimotesa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/suzoxurazewodule.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/wexediwalujezafuzigane.pdf
    • https://cdn.shopify.com/s/files/1/0434/1317/6469/files/vojolimunuweneloz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0298/5621/files/60143820461.pdf
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/lebagususaloxuxasirok.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013cc5.bin
5f037b7d71a6f4fbba7a79e5407e3065ab6ba9531f0fc02a65cebfe1bb18c6ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CC5 5376 bytes
font_01_sfnt_off00014f31.bin
fa92685f7541d22617686ead237b416a2ee780ac1f5dbb1c02746b0f31473269		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14F31 59428 bytes
font_02_sfnt_off0001cd96.bin
da6d78aabf2e0c131008e37c11e4029f2c1c73ee37dba6522cd96161b08373bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CD96 2212 bytes
font_03_sfnt_off0001d7af.bin
a3e6b376cf3ef0a622f0413aaf59a029fd518e1f92dda3cd22a085405da2da28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D7AF 19736 bytes
font_04_sfnt_off00021045.bin
94a2e64bc7cb242413bf0b9a168543d2d9e66e6da816ec022791ad488a02fc3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21045 16112 bytes
font_05_sfnt_off0002255a.bin
7fa29618c429229b2fc769676adc85ce8817e0f26e0529d93e0d0d072e2fce90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2255A 2280 bytes

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