Malicious PDF — malware analysis report

Static analysis result for SHA-256 de68465dd93fc183…

MALICIOUS

PDF

50.3 KB Created: 2020-08-25 09:30:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b20d5374f6f1b6dadd76f360c660b15 SHA-1: 59b0d997f652013db7a1915302d5f45cf36eb095 SHA-256: de68465dd93fc1832f47f87971272f9d8de98b901ab850fa0b898821fa5cc755
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.ru/pify?keyword=ssc+hall+ticket++2019+regular', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to "Ssc hall ticket 2019 regular", suggesting a lure. The presence of numerous Shopify links, while many are benign, indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious.

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=ssc+hall+ticket++2019+regular
    • http://files.danielvm.com/uploads/1/3/1/8/131856987/7840418.pdf
    • http://loxaror.daniellerosephotography.com/uploads/1/3/0/8/130873825/gupomaxat_bumemurorijug.pdf
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/kojarolanaju.pdf
    • https://cdn.shopify.com/s/files/1/0449/2899/1399/files/gantt_chart_project_plan_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/1530/6405/files/jerirosovupabepa.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/the_hollywood_reporter_survivor.pdf
    • https://cdn.shopify.com/s/files/1/0434/3323/0488/files/gijusalakum.pdf
    • https://cdn.shopify.com/s/files/1/0440/7744/9366/files/59250322074.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/23133764610.pdf
    • https://cdn.shopify.com/s/files/1/0428/8276/0870/files/79918859187.pdf
    • https://cdn.shopify.com/s/files/1/0436/8770/6774/files/tozepag.pdf
    • https://cdn.shopify.com/s/files/1/0447/1826/0377/files/rapab.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/66026563678.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_off000086a2.bin
dd9554ae63458479fd47ad03735fc248443144461448746ba0cc78a56730c5b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x86A2 5712 bytes
font_01_sfnt_off00009a09.bin
2d04da7ae915d6de27f19c87caa1a8ef1b5a0d63c0185759dc85d05ffa95d033
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A09 10076 bytes