Malicious PDF — malware analysis report

Static analysis result for SHA-256 402a0de75e9d35ad…

MALICIOUS

PDF

49.2 KB Created: 2020-08-06 16:02:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 776f5f106d809208373797aff1880a23 SHA-1: d77efd96ff6d12828bfdc257e8d0b97dd597b848 SHA-256: 402a0de75e9d35ad122d5f55b1f5fad136932cc52fb59582ef89e13a2a3fc2f9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=arduino+micro+schematic+pdf'. This suggests the document is designed to redirect users to potentially harmful sites. No scripts were extracted from this sample, limiting the analysis of direct malicious actions.

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=arduino+micro+schematic+pdf
    • http://files.nmakzoo.org/uploads/1/3/1/3/131381900/6261918.pdf
    • http://files.sarmemorialfund.com/uploads/1/3/1/0/131069899/lobebonoredimiviruvu.pdf
    • http://files.gracefargo.org/uploads/1/3/1/6/131606228/pupolov.pdf
    • http://files.fashionbysitaramysore.com/uploads/1/3/0/8/130813736/detufigagume.pdf
    • http://files.thesanctuarycapecod.com/uploads/1/3/1/4/131437513/1d2ecd5e.pdf
    • https://cdn.shopify.com/s/files/1/0434/4958/1724/files/xajotaxoniwubiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/nato_phonetic_alphabet.pdf
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/51976686288.pdf
    • https://cdn.shopify.com/s/files/1/0437/7467/3050/files/26079785136.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4199/files/37285724290.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8136/files/jiwipegipanela.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53981477141.pdf
    • https://cdn.shopify.com/s/files/1/0432/6319/7337/files/agricultural_engineering_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/nipipafowepelunewijalive.pdf
    • https://cdn.shopify.com/s/files/1/0448/0489/8978/files/bizhub_c454e_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/0712/3357/files/17125028360.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/76185814348.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_off000077bf.bin
293e38f27811045a7185379303868d0063020b69acd96e1ae9ef7024db9fabc8
pdf-font-stream PDF embedded font (sfnt) at offset 0x77BF 2896 bytes
font_01_sfnt_off0000820c.bin
168a20c0d7aca7e4fa40b64cf15c22ddee5e18937c1746adb80f2c3358cc4869
pdf-font-stream PDF embedded font (sfnt) at offset 0x820C 5352 bytes
font_02_sfnt_off00009417.bin
b96b3be44974ead3a7722a2dc33a8ee0a4a13922d9296ba0b40ad89fc9364860
pdf-font-stream PDF embedded font (sfnt) at offset 0x9417 10352 bytes