Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c48a5023af401e…

MALICIOUS

PDF

77.1 KB Created: 2020-07-11 01:54:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b5468c541886016b88f8116b6f08713 SHA-1: ca397f58010570a2474731fa6d56e5c9a5e81628 SHA-256: b2c48a5023af401e1c30d9630a179eceb6d260ac1c92cf98489e4cc0cb8f6d86
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-Override

The PDF file contains a large number of embedded links, a technique often used to direct users to malicious websites for phishing or malware distribution. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to traff.ru, indicating a known malicious redirector. The PDF_SEO_LINK_FARM heuristic further supports this by identifying a mass external PDF link farm, suggesting an attempt to manipulate search engine results or distribute content through numerous intermediary sites. 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=pulmonary+hypertension+pathophysiology+pdf
    • http://files.stitchmastersltd.com/uploads/1/3/0/8/130813923/4f5fc437a4.pdf
    • http://files.truewealthfg.com/uploads/1/3/2/7/132710687/migejowo.pdf
    • http://files.florablackettdesigns.com/uploads/1/3/0/8/130813762/dibusumenebagina.pdf
    • http://files.mrscallsfifthgradeheroes.com/uploads/1/3/2/8/132815342/8482473.pdf
    • http://files.wrfw887.com/uploads/1/3/0/8/130874564/pirodivufalofipab.pdf
    • http://files.whitneyelliottphotography.com/uploads/1/3/0/8/130874297/9904432.pdf
    • http://files.monsterinktattoostudio.com/uploads/1/3/2/7/132710671/rufumajokijan.pdf
    • https://labupuli.files.wordpress.com/2020/07/43396926254.pdf
    • https://xokumawuv.files.wordpress.com/2020/07/82781617295.pdf
    • https://defotikev.files.wordpress.com/2020/07/20544946400.pdf
    • https://nakeset.files.wordpress.com/2020/07/xedad.pdf
    • https://tizamugoli.files.wordpress.com/2020/06/xemujufipuzulelikutidep.pdf
    • https://dabujekikun.files.wordpress.com/2020/07/wifunerus.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/17189851022.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/tobera.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lonuxifipepi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38970143778.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_off0000d8c1.bin
fd3be85bede1cc4e2d8b63af00f494ada632653324cc774c28b577b03484299a
pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C1 5440 bytes
font_01_sfnt_off0000eb16.bin
6a149c2cbad9e95df14a0f5481bd34bb4ed5ec34c179a423d1e7ec392fdb19de
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB16 11996 bytes
font_02_sfnt_off00011287.bin
4ef9506ee11a349461550e6b437e3786686b598308a87786035880d16624999d
pdf-font-stream PDF embedded font (sfnt) at offset 0x11287 16060 bytes