Malicious PDF — malware analysis report

Static analysis result for SHA-256 3243d304f81070df…

MALICIOUS

PDF

43.7 KB Created: 2020-08-03 09:53:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58781b4b263048e1ff0fcef191ffae55 SHA-1: 0cb224254f73232b7293fa2b4029d031c0ec5b25 SHA-256: 3243d304f81070dfce7d9082c59aa4f62bce862c26ff22ebeb9b4e56aa98421d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.cc/pify?keyword=delete+a+group+on+facebook', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure the user to this malicious redirector. The file is generated by wkhtmltopdf, indicating it's likely a crafted document rather than a standard office file.

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=delete+a+group+on+facebook
    • http://files.lcdigitalconnect.com/uploads/1/3/1/0/131071252/dapawozijigawe.pdf
    • http://files.bestdreamlife.com/uploads/1/3/0/9/130969942/2d8375d.pdf
    • http://files.stringsviolinlessons.com/uploads/1/3/0/8/130814586/xujupemajakirib-tamililodinejiz-jukuxavatozemaj-walidelu.pdf
    • http://files.sharonreay.com/uploads/1/3/0/8/130814118/dowikatu_demanefazikelif_witakulo_dejaxod.pdf
    • http://files.gloucestershiregatewaytrust.org.uk/uploads/1/3/1/6/131636655/fokuwiwowapijarux.pdf
    • https://cdn.shopify.com/s/files/1/0431/6410/6909/files/vimozuniwedovobazona.pdf
    • https://cdn.shopify.com/s/files/1/0440/9887/9640/files/27799376042.pdf
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/31573662693.pdf
    • https://cdn.shopify.com/s/files/1/0433/3839/9902/files/19355092311.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1424/files/43359097447.pdf
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/rujebakuperozelogolezova.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3671/files/32088716206.pdf
    • https://cdn.shopify.com/s/files/1/0431/0394/4858/files/77647190331.pdf
    • https://cdn.shopify.com/s/files/1/0436/9501/4042/files/79573526270.pdf
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/89779767160.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060d5.bin
528f0a30e4b7fda1e5c1e253690eb5ea3fd20b4397803222a4bd5155ed12c11f
pdf-font-stream PDF embedded font (sfnt) at offset 0x60D5 5040 bytes
font_01_sfnt_off00007214.bin
298f4be43dcfd6e1066ad44c6a3ab9ae1cbf97c233ee7754fb6f79bbd8ee60b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7214 9900 bytes
font_02_sfnt_off000093e7.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x93E7 4324 bytes