Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d0be345a03c49ec…

MALICIOUS

PDF

46.0 KB Created: 2020-08-23 01:27:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46908f2846e6099ba4986f5c5e74a799 SHA-1: 70d12ca92736a11ad1b2127cb4a24ab987b454ca SHA-256: 4d0be345a03c49ec454257557d257b59c891e854d2994654bdc484f3b8875eef
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised as a free corporate invitation card design template. This is further supported by heuristics indicating a malicious redirector and a PDF link farm. The document body and embedded links suggest a social engineering lure to drive traffic to potentially malicious sites.

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=free+corporate+invitation+card+design+template
    • http://files.audsnanns.com/uploads/1/3/2/6/132683400/3685463.pdf
    • http://files.barronparkpreschool.com/uploads/1/3/0/9/130969663/vunuse_dufakufa.pdf
    • http://sifaleg.littleprincedoulaservices.com/uploads/1/3/1/4/131410538/vapenadupiwem.pdf
    • http://files.governmentgrants.net/uploads/1/3/0/7/130738524/4093892.pdf
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/nowinulogijotuxademat.pdf
    • https://cdn.shopify.com/s/files/1/0430/1609/3849/files/sogemewimapesavobe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/11414863754.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58585016777.pdf
    • https://cdn.shopify.com/s/files/1/0460/7783/7476/files/bipulalozixud.pdf
    • https://cdn.shopify.com/s/files/1/0432/3206/7748/files/13968231262.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4551/files/nozirikofolis.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/fiviwim.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ec0.bin
74ebd013787fd5d29ed33f3ac2aed0cbe72983d21f98257ded320f1418f48b9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC0 5196 bytes
font_01_sfnt_off00007044.bin
2b17894289ef4ac549ca5ccbfe538e6ebde94701791c0542cba9a71f2d67f349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7044 2268 bytes
font_02_sfnt_off00007a57.bin
12eab79607c002848c637e715b6e248ce0a2c96bccd5eb12be93e1f6a1b0c64b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A57 10096 bytes
font_03_sfnt_off00009cd6.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD6 4324 bytes

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