Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9dd956b784f13f9…

MALICIOUS

PDF

69.7 KB Created: 2020-08-03 09:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbbd83ff47144a61879e5c96a6ab8647 SHA-1: e3bd6b1b8d3846397e6738b5cd44f4de3f4bccab SHA-256: e9dd956b784f13f975f07e2969c45ca46793b15b7409924d2b97673c77311e17
152 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.ru, which is disguised with a keyword related to 'discord public servers'. The document also functions as a link farm, pointing to numerous other PDFs hosted on various domains, many of which are also suspicious. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=discord+public+servers
    • http://files.dats-il.com/uploads/1/3/2/7/132710704/sudetifelejojivifa.pdf
    • http://files.thelewisartgallery.com/uploads/1/3/2/7/132740838/9044599.pdf
    • http://files.fritosport.com/uploads/1/3/0/7/130739175/93ff397.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4808/files/36387302277.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/rumadivizurokegi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1828/8277/files/4900017508.pdf
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/dev_beats_down_low.pdf
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/tusun.pdf
    • https://cdn.shopify.com/s/files/1/0437/0753/1414/files/bumebaliwab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5221/files/54506583016.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/68490998508.pdf
    • https://cdn.shopify.com/s/files/1/0435/8701/0715/files/87344273876.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000671d.bin
a606a6dede3b99472d2ac97761204782646b5f75106b48d1abccbe9a99ca9a4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671D 6440 bytes
font_01_sfnt_off00007711.bin
39bd0c10517b9b097fdcd93383e4ea51d5709f5bfcf58f49205c835434cf4f86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7711 5056 bytes
font_02_sfnt_off00008852.bin
3f8ce7787853ee31fa9a82c08612d028270443d9aee24ceba5f8185e23af6cdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8852 20176 bytes
font_03_sfnt_off0000c582.bin
9f6ab5bef4c7bca57959bb43b3a954bc21564568797d4393abca5baaf69ff7f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC582 10668 bytes
font_04_sfnt_off0000ea62.bin
875980e045d1c787f27f96cf01812d0b2029f3d28ce1a4334776c31a060630bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA62 19100 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.