Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f944e751a88b20…

MALICIOUS

PDF

46.1 KB Created: 2020-08-11 21:32:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76d9029ad91be118cd84b1d7136562ba SHA-1: 52c4c81654c0eb09647f1e555a5a510fccbe5820 SHA-256: e0f944e751a88b200b522dba6cdd9d2fa8a7903258ecf9e52f11ff1d20290be5
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating it's a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the text 'Alabama abortion law pdf' and the URL 'https://ttraff.com/pify?keyword=alabama+abortion+law+pdf', suggesting a lure to trick users into clicking the link. The file also contains a large number of external PDF links, many hosted on Shopify, which is flagged as a PDF link farm. The primary malicious IOC is the ttraff.com redirector.

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.com/pify?keyword=alabama+abortion+law+pdf
    • http://files.alabamabalfour.com/uploads/1/3/0/7/130738740/f38c26ef9cf3e.pdf
    • http://files.sheng.studio/uploads/1/3/2/3/132302787/5644156.pdf
    • http://files.diyukon.com/uploads/1/3/1/4/131437889/a008e600a2.pdf
    • http://files.littleblossomsnurseryschool.com/uploads/1/3/0/8/130873918/d65ed476e89506a.pdf
    • https://cdn.shopify.com/s/files/1/0433/8581/5205/files/49878308119.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/47535534856.pdf
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/kolupebabobixezewugebur.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/96959835075.pdf
    • https://cdn.shopify.com/s/files/1/0429/9613/8137/files/wonefabevaburijonan.pdf
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/9515255474.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/wirevuwesezusele.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/lexemetejudokez.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/sefalexixifib.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/bukevomolusix.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/
    • https://cdn.shopify.com/s/files/1/0429/9613/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007868.bin
25183dac045c09d9035b386905b3f1161ff0ca0ba0c12eb1509291b4190a203c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7868 5228 bytes
font_01_sfnt_off00008a22.bin
4f5d9a7f3fff0f1d6c0c1795686ef48400fac9e6033c80a443ea669226e7e536		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A22 9844 bytes

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