Malicious PDF — malware analysis report

Static analysis result for SHA-256 6535ed252822bf3e…

MALICIOUS

PDF

34.9 KB Created: 2020-08-30 05:20:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0042f983d4bda8b12e3e921be08eec7 SHA-1: 6085f1e9915e9819561e5e5d0c3d926a1bd548d0 SHA-256: 6535ed252822bf3e59a47d2f84fcbd0ee60ba7a4ad671493c94aa950c5b5dfb7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, including a primary redirector. The document body and embedded link data suggest an attempt to lure users through search result-like content, specifically referencing a movie title. The presence of a malicious redirector URL indicates a probable phishing or malware distribution attempt.

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=the+last+witch+hunter+dual+audio+720
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/mamuvavegijomikorunaze.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0304/files/95977493107.pdf
    • https://cdn.shopify.com/s/files/1/0429/6487/7475/files/27196785083.pdf
    • https://cdn.shopify.com/s/files/1/0433/3345/1926/files/98246000172.pdf
    • https://cdn.shopify.com/s/files/1/0437/6965/9549/files/d_d_manual_of_the_planes.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/wamis.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/elysium_wow_realmlist.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/lirotusesevobatizelodiwin.pdf
    • https://static.usrfiles.com/ugd/b52961_539ab6c7627e4814a510f71c4a65a62b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0399333a34a74fe2886e000b8b12b952.pdf
    • https://static.usrfiles.com/ugd/b8c837_9de39514f661457f85d44fcf7b7d49b6.pdf
    • https://static.usrfiles.com/ugd/cd79e3_4034e59de4d041fab8bd8d8602177921.pdf
    • https://static.usrfiles.com/ugd/b8c837_60ba390690174b53b9191859c809e2a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4f4ad8a7f1045a68f72f7509879d609.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a22.bin
0d21651f729f9b0364eb490c20e902a5be51c3a29840750577057c71d97abb1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A22 5420 bytes
font_01_sfnt_off00005c98.bin
540e49f1e8efd8edbca0e8df1d8464a3f8fe0feab3229783f4bd56bd9ca3ff4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C98 10272 bytes