Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5eb820b328383c9…

MALICIOUS

PDF

44.3 KB Created: 2020-09-04 23:29:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fedd386f20977cf8d2b359923df992d9 SHA-1: 11b5f2a19c2394ecdecb346fb8e3d6287c76bd1d SHA-256: e5eb820b328383c92b23fb03a0d406b018765e03b74e4d15cbd9779056a620f5
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including one that redirects to a known malicious domain. The document body, though heavily obfuscated, contains text referencing "Adobe after effects template free" and a URL that appears to be a lure. The primary malicious URL is https://ttraff.club/wix?keyword=adobe+after+effects+template+free, which is likely intended to lead the user to a phishing or malware download page. The PDF also contains a large number of links to static.usrfiles.com, which are likely part of a link farm to improve search engine ranking for the malicious lure.

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.club/wix?keyword=adobe+after+effects+template+free
    • https://static.usrfiles.com/ugd/b8c837_4882addf254c45429f8ddd300ca1c29a.pdf
    • https://static.usrfiles.com/ugd/b8c837_881cf17a5c4749aba71450fa4b908378.pdf
    • https://static.usrfiles.com/ugd/7820d0_f36428ae17ef40ac96a7193fb4d0a168.pdf
    • https://static.usrfiles.com/ugd/185c00_e4ee937b3db14444a047bd5fba23d9ca.pdf
    • https://static.usrfiles.com/ugd/6240f8_a8556b2b81aa48909fb06ca752733c93.pdf
    • https://cdn.shopify.com/s/files/1/0457/5857/8852/files/pathfinder_campaign_setting_inner_sea_races.pdf
    • https://cdn.shopify.com/s/files/1/0437/7749/1105/files/japanese_drama_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/6957/8147/files/89640447142.pdf
    • https://cdn.shopify.com/s/files/1/0433/4521/5637/files/papedimofanij.pdf
    • https://static.usrfiles.com/ugd/ab63e3_835ff408da1e4dd6a5f3d52a27b14a0f.pdf
    • https://static.usrfiles.com/ugd/4d935e_09de8f397ff9414594a1b00a296f2953.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d11e7ab723e474db2ac34467a97e171.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8375/files/pibajidowovokikonudupepi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/36288349459.pdf
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/21935913347.pdf
    • https://cdn.shopify.com/s/files/1/0429/8850/3203/files/35701506772.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_off00006e90.bin
34bfa2ec3518556c402b3a3a4d37526e477ba3091560d25d5047672942a0c614
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E90 5432 bytes
font_01_sfnt_off000080f1.bin
9597cb636eb27f99a2b663f607ef881809138de480f9f91192a0623a7f71834e
pdf-font-stream PDF embedded font (sfnt) at offset 0x80F1 10464 bytes