Malicious PDF — malware analysis report

Static analysis result for SHA-256 aff847967b00b113…

MALICIOUS

PDF

42.3 KB Created: 2020-08-21 05:50:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c8f5c1cf35d3f6ae58cf215847534c1 SHA-1: 5e849da103424d5f6bc52926c15ae729ced499fb SHA-256: aff847967b00b11356ec733b694a06498749b99ff382cd09ddf4b3dfce42fb8b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One of the primary links points to `ttraff.ru`, a known malicious redirector. The document body contains garbled text along with the URL `https://ttraff.ru/pify?keyword=latest+south+african+hip+hop+music`, suggesting a lure to disguise the malicious intent. 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.ru/pify?keyword=latest+south+african+hip+hop+music
    • http://files.gnostictarotkabbalah.com/uploads/1/3/1/3/131384495/libajanaxipix_lizogoxokod.pdf
    • http://gejajeda.mjankauski.com/uploads/1/3/1/4/131438437/6525719.pdf
    • http://files.mak-jewelry.com/uploads/1/3/0/8/130814411/gulemuk_jepokosupezorel_jejisakidog_natavusaso.pdf
    • http://files.alessertraveledroad.com/uploads/1/3/1/4/131437246/523e05f35a.pdf
    • http://vobub.newmexicolegalhelp.com/uploads/1/3/1/4/131438729/79f568b.pdf
    • https://cdn.shopify.com/s/files/1/0429/0763/1783/files/23175281842.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0843/files/attendance_allowance_app_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/0707/4723/files/97536232364.pdf
    • https://cdn.shopify.com/s/files/1/0428/5608/7708/files/kotapudazom.pdf
    • https://cdn.shopify.com/s/files/1/0434/9450/6661/files/gta_v_mod_menu_ps3_usb.pdf
    • https://cdn.shopify.com/s/files/1/0433/6667/8686/files/46834978736.pdf
    • https://cdn.shopify.com/s/files/1/0429/9299/2410/files/27108383625.pdf
    • https://cdn.shopify.com/s/files/1/0432/5838/0446/files/jukuro.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_off00006738.bin
8a6676d92d98a24d7041040048d2e5984b4bddf521bbcacacd0ec8e794a71291		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6738 5164 bytes
font_01_sfnt_off000078a2.bin
98ffae7fdf79ce65257a32a025040137f66d73ef0c5797dfde9d381f849006cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A2 10564 bytes

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