Malicious PDF — malware analysis report

Static analysis result for SHA-256 4856f498e89a290e…

MALICIOUS

PDF

47.8 KB Created: 2020-08-22 01:53:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90f1f740a6c71157fd48df2af88659ca SHA-1: ae1e8a2aa41b95605a7d619e69937115fd0aae3b SHA-256: 4856f498e89a290ecb290fb2890fe85e0bddbee00e9228ddf303944004dea4de
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to malicious sites. The document body, though heavily corrupted, contains references to the same URL and a large number of other PDF links, indicating a link farm strategy. The primary malicious URL is https://ttraff.cc/pify?keyword=manualidades+navide%25C3%25B1as+con+botellas+de+pl%25C3%25A1stico+recicladas, which is likely used for phishing or to serve further malware. No scripts were extracted from this sample.

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=manualidades+navide%25C3%25B1as+con+botellas+de+pl%25C3%25A1stico+recicladas
    • http://files.lrbred.com/uploads/1/3/2/7/132740270/sizur_kopawubo.pdf
    • http://tasiwat.dreyfus-emerson.com/uploads/1/3/1/4/131453134/xesotibevonevedejako.pdf
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/kozatixes.pdf
    • https://cdn.shopify.com/s/files/1/0434/3971/8562/files/glencoe_advanced_mathematical_concepts.pdf
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/android_one_top_features.pdf
    • https://cdn.shopify.com/s/files/1/0440/5785/4102/files/debedu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6826/7423/files/mojakuguvotixerax.pdf
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/7148661393.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/fagokefitemazokutemoj.pdf
    • https://cdn.shopify.com/s/files/1/0465/5110/5686/files/30031775873.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/zoluvagigagawexopidovi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2499/0887/files/25291742630.pdf
    • https://cdn.shopify.com/s/files/1/0435/1125/1099/files/82664859530.pdf
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/how_to_find_utilities_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/6767/8618/files/kisitasogakavikiz.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_off0000626f.bin
cfeedbc950ad791785e3db3e6c834f4233db86838133291320556e1a683d2c9a
pdf-font-stream PDF embedded font (sfnt) at offset 0x626F 5600 bytes
font_01_sfnt_off000074a6.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x74A6 1800 bytes
font_02_sfnt_off00007d33.bin
85725cd21cc27f288d37cf36b94be8353aaaef933dc54355619d41c3403a5e8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D33 10916 bytes
font_03_sfnt_off0000a096.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA096 4324 bytes