Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd340ccbce54fab0…

MALICIOUS

PDF

47.7 KB Created: 2020-08-06 16:07:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67f18a7c0fe5e8de41f1cb6710c21dce SHA-1: a305d5f1479a56f13a130e4e593806d56b2f89b1 SHA-256: dd340ccbce54fab03ca4213752856e8818093cb7e5319586b74546e974669c22
120 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=inductive+bible+study+guide+pdf'. It also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains text related to 'inductive bible study guide pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious redirect. No scripts were extracted from this sample.

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=inductive+bible+study+guide+pdf
    • http://files.jdhslibrary.org/uploads/1/3/1/6/131606730/dofajut-mijunonibutaw-folipurafabiw-kukotujujonepi.pdf
    • http://files.prepstep.biz/uploads/1/3/2/3/132302764/liwupadisojix.pdf
    • http://files.colleengeorges.com/uploads/1/3/1/4/131406473/a921fe6ff3d39.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/fulasasavosidotaxuvisi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8279/2612/files/castillos_de_hielo_partitura_para_piano.pdf
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/17018239435.pdf
    • https://cdn.shopify.com/s/files/1/0430/7307/7415/files/25630685519.pdf
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/23881026512.pdf
    • https://cdn.shopify.com/s/files/1/0429/8267/0485/files/mativirudujesesa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/wisejapuvatilafetutinifun.pdf
    • https://cdn.shopify.com/s/files/1/0434/0390/3127/files/cardenolides_and_bufadienolides.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6833/files/43472821220.pdf
    • https://cdn.shopify.com/s/files/1/0433/0058/5636/files/bobakirij.pdf
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/zasirasirunes.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/strategy_business_magazine_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/57304542315.pdf
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/53369750092.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_off00006e55.bin
e2f14f5f57092dbb5963d8e5d3a37ac1b38a5568bdc37c1e5e0984c30f3c5266
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E55 5028 bytes
font_01_sfnt_off00007f89.bin
91477f18c5f3d1fad10d17cf96cc82e79b0be14d9ed215c6ca4aef19a9fdee62
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F89 10424 bytes
font_02_sfnt_off0000a327.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA327 4324 bytes