Malicious PDF — malware analysis report

Static analysis result for SHA-256 8334c286ecbd87e3…

MALICIOUS

PDF

67.9 KB Created: 2020-08-23 00:01:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01ee8ad398fa6dd569524b02f26dcd37 SHA-1: 4bc78a78583a1b59916e3df4f1ea83dd6c3b8f78 SHA-256: 8334c286ecbd87e37473ea4502b66ae468d5a24256f2a5aa034827f2215f0daa
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=s8+navigation+bar+apk+no+root'. This indicates an attempt to lure users to malicious infrastructure. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify but point to external PDFs. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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=s8+navigation+bar+apk+no+root
    • http://files.merkthose.com/uploads/1/3/0/7/130776661/ditowiwimusuguroj.pdf
    • http://files.clevelandtheater.org/uploads/1/3/0/8/130814430/fc15537e9b27.pdf
    • http://lanipib.thegreatlife.com.au/uploads/1/3/2/6/132695366/kobito.pdf
    • http://files.thecourageousstepsproject.org/uploads/1/3/2/8/132814611/6c0a2abcbdb4.pdf
    • http://jakeje.socalseas.com/uploads/1/3/0/8/130814328/sudejebinopi-dobipi-wulovepasimir.pdf
    • http://www.mafiapaidapps.com/2017/12/s8-navigation-bar-pro-no-root-simple.html
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/13811579634.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/53854244110.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdf
    • https://cdn.shopify.com/s/files/1/0440/8279/0552/files/legendary_markings_feral_heart.pdf
    • https://cdn.shopify.com/s/files/1/0436/9183/5546/files/foxepagutafedi.pdf
    • https://cdn.shopify.com/s/files/1/0443/4948/9308/files/avermedia_game_capture_hd_ii.pdf
    • https://cdn.shopify.com/s/files/1/0434/0698/3333/files/amos_20_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0462/2005/0586/files/4698690877.pdf
    • https://cdn.shopify.com/s/files/1/0434/7753/2822/files/accomplishment_report_intramurals.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5947/files/86530658231.pdf
    • https://cdn.shopify.com/s/files/1/0434/6583/4658/files/ftse_all_world_ex_us_fact_sheet.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_off0000b409.bin
397214fe7f0be064760428c6b8e82f64da7095766949b0170ec32adcc24b96b8
pdf-font-stream PDF embedded font (sfnt) at offset 0xB409 5340 bytes
font_01_sfnt_off0000c643.bin
35c006e8274dcf77120ac50a934e9f67feb0a0e86a241948573a117165ca82bb
pdf-font-stream PDF embedded font (sfnt) at offset 0xC643 11840 bytes
font_02_sfnt_off0000ed0e.bin
5e08925ead205efb7a3c6735982b36f87fce58b2f20f3c50188d1180594cb824
pdf-font-stream PDF embedded font (sfnt) at offset 0xED0E 16204 bytes