Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e13d526a1ebe44…

MALICIOUS

PDF

52.6 KB Created: 2020-08-29 19:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e4ae07f4eedfce88dd64c8d9f93348d7 SHA-1: 13e12e4203cc209a311ce8a9e558da3e56429ed3 SHA-256: 06e13d526a1ebe44e4913fb8e6cd8e5ab57ac8bccfd644ab2a46c64cf00a1f03
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for game cheats, likely intended to trick users into clicking malicious links. The presence of a password-protected archive lure heuristic suggests the document may be a precursor to a more complex malware delivery chain.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.cc/wix?keyword=pokemon+mystery+dungeon+gba+cheats
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_4579e7ee784243c0a674461dea26c8ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_16d878a99e694a5d98a201f02f8bfb7a.pdf
    • https://static.usrfiles.com/ugd/b8c837_a496ec9dafba4540af55f577d62db32e.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/38056319884.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/78266340455.pdf
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/kagawato.pdf
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/bebipexososesolutuvuku.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd3aa7ddd1d54a7f93fccc8d5cfc3341.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7651669e1064a968952ffd9e7985694.pdf
    • https://static.usrfiles.com/ugd/e5a943_53bff26758e348f1a20126ff2f8f979f.pdf
    • https://static.usrfiles.com/ugd/89064d_c44541134f734cbb9d4c10422774235f.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/6197604133.pdf
    • https://cdn.shopify.com/s/files/1/0462/3853/1738/files/palabras_en_una_graduacion.pdf
    • https://cdn.shopify.com/s/files/1/0431/5676/6882/files/livro_modernidade_liquida.pdf
    • https://cdn.shopify.com/s/files/1/0452/7095/8241/files/zoology_practical_manual_class_12.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f13.bin
1f6c97403ce987ff5678c35f47e6a3ca17cd36387ca4f56a66582e3744c5ad1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F13 5460 bytes
font_01_sfnt_off00009173.bin
d0d2becfdc77829bed1178eee854569bbbddb70fc140777159c96142f46f11d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9173 11020 bytes
font_02_sfnt_off0000b6b9.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B9 4324 bytes

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