Malicious PDF — malware analysis report

Static analysis result for SHA-256 d862e0fc1a2f9597…

MALICIOUS

PDF

66.5 KB Created: 2020-09-03 16:13:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14bf1401b7940205a7ad029d2207d0ea SHA-1: 696f4330d01fc58acf8e332876bc362d37fac5d7 SHA-256: d862e0fc1a2f95971cd88df693b7be7a69157bd56c661e66e986c0db10668d68
152 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The link directs to 'https://ttraff.club/wix?keyword=360+hd+camera+app', suggesting a phishing or scam attempt. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=360+hd+camera+app
    • https://static.usrfiles.com/ugd/b8c837_072d40fa865547848a6974d082d64c2f.pdf
    • https://static.usrfiles.com/ugd/bf0735_f2bcc977fbf84745a956f0c5aefaf80c.pdf
    • https://static.usrfiles.com/ugd/edb4a7_69b7dd81b4ea4906a5b5949d63fc575a.pdf
    • https://static.usrfiles.com/ugd/c1c462_720d8324a0894e409da07080b91da9ae.pdf
    • https://static.usrfiles.com/ugd/906e9f_f506d887204c4141a52f8c48cc6f08f3.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbda78b3ee63433cb05b7472cff4917e.pdf
    • https://static.usrfiles.com/ugd/5b9a87_adb5b4edb174409a8f16e11018ea90e9.pdf
    • https://static.usrfiles.com/ugd/76dd3d_db42b81d62f040d8953489d5d91c4e93.pdf
    • https://static.usrfiles.com/ugd/8b97dd_f4fb050ba11d4eb7ad2fe3b5a53b49bf.pdf
    • https://static.usrfiles.com/ugd/113e89_34fe5719e6ff47c084f6e6afb987b2e1.pdf
    • https://static.usrfiles.com/ugd/0ad6c7_34c5a2b7ef4e42a2842d787f80868566.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009f64.bin
cd0f4f726e10d9c8cce0e6292acdf9891362ce97705d1b2908e90e85886285c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F64 4912 bytes
font_01_sfnt_off0000afee.bin
07cc2338c1912249c0aeee2675e60d69d150d8a7f353dea7840465fc92e3ebb2
pdf-font-stream PDF embedded font (sfnt) at offset 0xAFEE 10908 bytes
font_02_sfnt_off0000d520.bin
6ab21ea73a1025062cea7e4dd2971e4dce7e86401985f5da640437991aa80e18
pdf-font-stream PDF embedded font (sfnt) at offset 0xD520 17472 bytes
font_03_sfnt_off0000eecd.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xEECD 4324 bytes