Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd05eeb0f95008dd…

MALICIOUS

PDF

51.1 KB Created: 2020-07-24 15:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c386d4f31e7882af673e0a3321dd7c94 SHA-1: 783e97ca6bf87c6f13e049618c348ac9eb7abbac SHA-256: fd05eeb0f95008dd8bee71701c6babbd4a2db40e9f6cc3fec4fe0bbac5dd914a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This URL is presented in a context that appears to be a lure related to game modifications. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. No scripts were extracted, but the primary attack vector appears to be directing users to malicious infrastructure via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=counter+strike+source+mod+menu
    • http://files.pa4sc.com/uploads/1/3/1/4/131407629/kifasupuxojabufik.pdf
    • http://files.gridironcamp.com/uploads/1/3/1/1/131163859/tivisivis.pdf
    • http://files.betterbloodwork.com/uploads/1/3/2/6/132696210/wumerodipeb_gapususiri_tudinigafisarim_gatujabajasi.pdf
    • http://files.cassandralaurion.com/uploads/1/3/1/6/131636946/mokapipuxe-xaxaxavedeja-ruzafe-tasimifuvadexew.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/xoviwozori.pdf
    • https://cdn.shopify.com/s/files/1/0430/3893/3146/files/runobavufulaxan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0058/5636/files/kileluvenatogonojima.pdf
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/sanek.pdf
    • https://cdn.shopify.com/s/files/1/0432/4835/3442/files/10828036803.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/fezixugakenafimog.pdf
    • https://cdn.shopify.com/s/files/1/0437/7441/0910/files/29391150289.pdf
    • https://cdn.shopify.com/s/files/1/0435/0499/2408/files/lazimulilexaro.pdf
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/80878300710.pdf
    • https://cdn.shopify.com/s/files/1/0434/6540/8662/files/bogixubutuditagu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4434/7799/files/43064568802.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5903401900.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/zafovurisijawedul.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/
    • https://cdn.shopify.com/s/files/1/0432/4835

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007568.bin
56ed957d710e23b347186e02c9ae076904ba8ca74125be3f873fccb8edd55fd4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7568 4812 bytes
font_01_sfnt_off000085ad.bin
c9adfd449e0d84e4d8b66c3a09dd9cdcfb84e1ccacfbe8210ee4df4417aec63c
pdf-font-stream PDF embedded font (sfnt) at offset 0x85AD 10412 bytes
font_02_sfnt_off0000a965.bin
91c92fab729f552433758475f1ecf6a366c66c74ae6b4dd9e31a9a0100f2b42c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA965 16332 bytes