Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d7e66101f695c64…

MALICIOUS

PDF

37.0 KB Created: 2020-08-31 03:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc467c629a4da59eb308fa675c7d367b SHA-1: 078cd5ed58427714757e29fe9f65641382aa4217 SHA-256: 4d7e66101f695c6421c05fabd9d05a9073bd5a6ea66f5f05471ba68cb9864de1
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious. The presence of a link to 'ttraff.me' suggests an attempt to redirect the user to a malicious site, likely for phishing or malware delivery. The document body itself appears to be obfuscated or corrupted, but the presence of the malicious URL is the primary indicator of compromise.

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.me/wix?keyword=baptiste+lecaplain+torrent
    • https://static.usrfiles.com/ugd/b8c837_a22e2b3ce62c4814912a82417a8a1b39.pdf
    • https://static.usrfiles.com/ugd/b8c837_39b70d8bed95487c88a558d717dc91f5.pdf
    • https://static.usrfiles.com/ugd/764aaa_0034dc8190ee409293c1cac567198232.pdf
    • https://static.usrfiles.com/ugd/0779a3_31cae3d598e94a9c89bce08c9dcf6f76.pdf
    • https://static.usrfiles.com/ugd/599f1c_2e7608f730ea48238bf4a36d43aaa3a9.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/kaganixebexiduf.pdf
    • https://static.usrfiles.com/ugd/b8c837_3367e658e42746dfaa533ddcfa22ec36.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb7f2479483b46509ae1b8bf42284415.pdf
    • https://static.usrfiles.com/ugd/0adedf_e69a185917144767ae20cc874a410552.pdf
    • https://static.usrfiles.com/ugd/b8c837_dad603711759498baecad27aba6bcb64.pdf
    • https://static.usrfiles.com/ugd/fe83c3_506a1c10cad54549a004849de1e30215.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/skyrim_music_overhaul.pdf
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/pulawumerozuxofezodirin.pdf
    • https://cdn.shopify.com/s/files/1/0434/0806/4677/files/schneider_ats_controller_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/60794677198.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_off0000527d.bin
eb516c71f5d879dfcfef8fc93bc850be34d28b2f7dabbc4b6b40cc207bb0dce6
pdf-font-stream PDF embedded font (sfnt) at offset 0x527D 4976 bytes
font_01_sfnt_off00006368.bin
d9a0681ff7b4a77a46fbce6618fad47666f403e2fdabbee90921d94d4d791b47
pdf-font-stream PDF embedded font (sfnt) at offset 0x6368 10496 bytes