Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1273203c2da2ead…

MALICIOUS

PDF

49.0 KB Created: 2020-09-03 22:51:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4332e24f66fcc61b2172631b8b09f46d SHA-1: bd73ce96e8293ab4f76fa0a87fc4c62fdda50f8d SHA-256: f1273203c2da2ead5282d387281578f51946fb1cb5e856c99340052ff34ccce6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify and static.usrfiles.com. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.me/wix?keyword=jest+coveragereporters+lcov`. This suggests the document is designed to lead users to malicious content through a series of redirects.

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.me/wix?keyword=jest+coveragereporters+lcov
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/knight_rider_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0437/5727/3237/files/viregoxif.pdf
    • https://cdn.shopify.com/s/files/1/0430/8349/7621/files/makalah_pengertian_pendidikan_agama_islam.pdf
    • https://cdn.shopify.com/s/files/1/0432/9740/7126/files/pay_my_shell_credit_card.pdf
    • https://static.usrfiles.com/ugd/0dd040_767acf6cf58f436797f440d22de5bd0a.pdf
    • https://static.usrfiles.com/ugd/0d2908_aee7b30f3c674041b03ec26fe0d42849.pdf
    • https://static.usrfiles.com/ugd/299074_948543cd521849cd9d1cacf1583cb5ea.pdf
    • https://static.usrfiles.com/ugd/5b604d_13b5c8193a5547258525490faa85e7bc.pdf
    • https://static.usrfiles.com/ugd/466fa0_8b6b70885fdc498aa3980e675fe5cbe9.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_off00007c91.bin
e5c51144580b1aa61640c88120e3f619ef9c87c8ce4bc1e7c65c6773bf19ca63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C91 5152 bytes
font_01_sfnt_off00008e34.bin
9bb67a7c268256fda61558116a72098a3a661fc17841e38b30fd1f6eef0bfa05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E34 12604 bytes

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