Malicious PDF — malware analysis report

Static analysis result for SHA-256 938e1b7eadc8a69d…

MALICIOUS

PDF

48.2 KB Created: 2020-08-07 13:19:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d18b43cd36db6241c7921613a0348d0 SHA-1: 99c956425e7e5c8932bbc3f30a2ff92e06ab530d SHA-256: 938e1b7eadc8a69d4c0154cdfea9971706a1032b7dc946144cae5aa22aac47bc
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to direct users to a malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the URL that is likely intended to lure the user into clicking on it. The presence of numerous other PDF links suggests a broad distribution or SEO poisoning attempt.

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=sales+promotion+activities+pdf
    • http://files.mac-italy.com/uploads/1/3/1/8/131871740/kizozox-wenemerageg-bamipeg-wodut.pdf
    • http://files.chrystakay.com/uploads/1/3/1/4/131482821/1213d4f5.pdf
    • http://kegita.jessicabechtelart.com/uploads/1/3/1/4/131407406/1584895.pdf
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/printable_cricket_score_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/7779621148.pdf
    • https://cdn.shopify.com/s/files/1/0432/7633/7318/files/zodat.pdf
    • https://cdn.shopify.com/s/files/1/0428/7502/7619/files/36700505411.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0392/files/xowupuvopiliwemoteju.pdf
    • https://cdn.shopify.com/s/files/1/0429/2155/8183/files/bash_do_while.pdf
    • https://cdn.shopify.com/s/files/1/0440/5339/7654/files/18285824930.pdf
    • https://cdn.shopify.com/s/files/1/0433/8214/5182/files/xiruriwukix.pdf
    • https://cdn.shopify.com/s/files/1/0430/8520/1561/files/18555174294.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/56329164913.pdf
    • https://cdn.shopify.com/s/files/1/0434/6006/7481/files/47065842005.pdf
    • https://cdn.shopify.com/s/files/1/0437/8217/6920/files/wilogabamosuwedo.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_off00007cec.bin
0ccc74ba60bcb48e3440a78b24e6550fbeb9478f18daead578a8132c8f49ac5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEC 5464 bytes
font_01_sfnt_off00008f77.bin
c9fb518a183f9affe9f14d943b96a165dd885787c8a2da940e822116312ef5d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F77 10580 bytes

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