Malicious PDF — malware analysis report

Static analysis result for SHA-256 37848fa17a5a3d96…

MALICIOUS

PDF

106.3 KB Created: 2020-08-03 18:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d03ace143d2d73ddbde339bbf024ac6b SHA-1: cba7f6ae8726ad1b0c0c2cd0474143c1f17e6fa8 SHA-256: 37848fa17a5a3d96d0e89bce269c2e21885dbb0c092f43bbda7541efd0671634
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, suggesting an attempt to manipulate search engine results or distribute malicious content. The 'SE_INVOICE_LURE' heuristic further suggests the document's content is designed to trick the user into clicking the malicious link, likely for phishing or malware delivery.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=article+19+2+pdf
    • http://files.essense.com/uploads/1/3/0/7/130740260/a522d74.pdf
    • http://wudix.laurennelsonyoga.com/uploads/1/3/0/7/130738524/a43d23aebefa.pdf
    • http://files.axokok.org/uploads/1/3/1/3/131383456/xekezerafejabewofel.pdf
    • http://files.jessicakeyart.com/uploads/1/3/1/4/131453111/mamobibe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8387/files/kipozigewomof.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/11230226503.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/benevolent_assimilation.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/lumoravarijafasalovizo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7954/8580/files/71969031065.pdf
    • https://cdn.shopify.com/s/files/1/0433/5101/5577/files/96333881489.pdf
    • https://cdn.shopify.com/s/files/1/0438/4066/7808/files/52472994673.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/1050162800.pdf
    • https://cdn.shopify.com/s/files/1/0432/5372/7387/files/sajikizurujorujog.pdf
    • https://cdn.shopify.com/s/files/1/0429/8299/8170/files/half_cyborg_anime_girl.pdf
    • https://cdn.shopify.com/s/files/1/0433/7745/9363/files/48060760761.pdf
    • https://cdn.shopify.com/s/files/1/0429/6628/6490/files/sejitekewinejixapisawano.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_off0001588c.bin
3d7a797cbbedf6835de9c7b386bd91ba6db490565ae9e7bd3736b3b86a63ef03
pdf-font-stream PDF embedded font (sfnt) at offset 0x1588C 5088 bytes
font_01_sfnt_off000169fb.bin
f4d062b38938e89237d7c64cd31d8bfac42fb8c4938b59874c02beee5aeb8203
pdf-font-stream PDF embedded font (sfnt) at offset 0x169FB 16152 bytes