Malicious PDF — malware analysis report

Static analysis result for SHA-256 51762b67aa78f29e…

MALICIOUS

PDF

58.1 KB Created: 2020-09-04 21:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78abfe879058a71c33d868a15401a0d0 SHA-1: 74d9a497b266232b8c27bbd5f1773d71168dd376 SHA-256: 51762b67aa78f29eeefbd79e1cca8294f5b013b7bbaa22975025c2e27517c366
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the target URL and mentions 'age of vikings mod apk', suggesting a lure for users seeking game modifications. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a larger network of linked PDFs, likely for SEO manipulation to drive traffic to 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.me/wix?keyword=age+of+vikings+mod+apk
    • https://cdn.shopify.com/s/files/1/0439/0505/6920/files/tobeb.pdf
    • https://cdn.shopify.com/s/files/1/0445/7309/8143/files/company_of_heroes_2_realism_mod.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/bs_player_free_for_macbook_air.pdf
    • https://static.usrfiles.com/ugd/685707_e97311c653734810881666b59e991758.pdf
    • https://static.usrfiles.com/ugd/f46427_e60f0c7060d946319b26700023682207.pdf
    • https://static.usrfiles.com/ugd/d9e9a0_9a7cecc0c6c147cd955ffd294655d469.pdf
    • https://static.usrfiles.com/ugd/bb13a2_f868a637300945148248c50c3a064d57.pdf
    • https://static.usrfiles.com/ugd/17ce20_c2ee2ed86ad042cf8bc15ed8ab761975.pdf
    • https://static.usrfiles.com/ugd/9cfd0a_dd464d945ed74784b572f5a545dcc740.pdf
    • https://static.usrfiles.com/ugd/b8c837_a05a740ae8084971922c5bc4ebafd620.pdf
    • https://static.usrfiles.com/ugd/e8506d_f70c8bc5fa0c46b3993f1107f11c3ae4.pdf
    • https://static.usrfiles.com/ugd/078c79_6582306d52e3441cbe16701e77a9b12a.pdf
    • https://static.usrfiles.com/ugd/2eec94_e9bae8afe5504f15883470ba26bb1ebb.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/1/0432/5851/1510/files/bs_player_free_for_mac

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000679d.bin
9a03045ceedfdabf366f4134dbb51b5e2b22d2e5ad3846a3064162cfbb65dc9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x679D 5056 bytes
font_01_sfnt_off000078bb.bin
8535e317148de89266028ac32027ca9cd6d6fd3df9dce1269b8e1d2e001abf06
pdf-font-stream PDF embedded font (sfnt) at offset 0x78BB 9108 bytes
font_02_sfnt_off000092cb.bin
1d6d6401eacfb2fb2db6e5de528c5b762a72c2adfb2d1a37b52b4f30c9c20d39
pdf-font-stream PDF embedded font (sfnt) at offset 0x92CB 10584 bytes
font_03_sfnt_off0000b70a.bin
bcc960100e1b82b52ac003ded46c4da84a12d6e4d658d06f9551137e90be9242
pdf-font-stream PDF embedded font (sfnt) at offset 0xB70A 16212 bytes
font_04_sfnt_off0000cc64.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC64 4324 bytes