Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ead3cde2bd14939…

MALICIOUS

PDF

200.3 KB Created: 2020-08-12 22:13:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20c2bc770062168d31ec66c1d5a19b9d SHA-1: f51418303aa3e61c3add2f061029fc973f81d7d4 SHA-256: 2ead3cde2bd1493981ac12c6b98bfa94952be474af761dc9be2cf794374c6012
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.com/pify?keyword=warhammer+40k+drukhari+codex+pdf', is the primary indicator of malicious intent, likely serving as a lure for further malicious activity. The document body, though heavily obfuscated, contains this URL, reinforcing its role in the attack. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • 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.com/pify?keyword=warhammer+40k+drukhari+codex+pdf
    • http://files.powerandposition.com/uploads/1/3/2/6/132695633/1216683.pdf
    • http://files.livewithlou.com/uploads/1/3/1/4/131438604/8728dcc37ccd1a4.pdf
    • http://files.abruzzoreview.com/uploads/1/3/2/7/132710717/6377005.pdf
    • http://files.wallingfordmuseum.org.uk/uploads/1/3/1/4/131453021/zomimokuwuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/49708745663.pdf
    • https://cdn.shopify.com/s/files/1/0430/5630/0186/files/41997251937.pdf
    • https://cdn.shopify.com/s/files/1/0429/2509/7126/files/bagodirizimexatiriraso.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/17554905769.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2902/files/xujuwifunozudutuga.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/biodiversity_loss_causes.pdf
    • https://cdn.shopify.com/s/files/1/0433/4311/8495/files/60640984928.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/xadevidatukugavokexep.pdf
    • https://cdn.shopify.com/s/files/1/0432/4891/0491/files/36076590988.pdf
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/27420516062.pdf
    • https://cdn.shopify.com/s/files/1/0434/0852/3416/files/activated_carbon_manufacturing_process.pdf
    • https://cdn.shopify.com/s/files/1/0434/3287/0037/files/bawuvo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0777/7700/files/80453516750.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/71148178911.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_off0002db2d.bin
b4fe6072297a9b23512598ca8c82763bb08dadf8fab78a209bc9a2454a540589
pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB2D 5560 bytes
font_01_sfnt_off0002ee06.bin
a514be5f178a43055356463b4822b59ecea10428a800e0ace01a3f596fff0830
pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE06 10864 bytes