Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f4779d62650948f…

MALICIOUS

PDF

43.6 KB Created: 2020-08-18 21:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 133d6b5c1277641d2cb2e94872c650a3 SHA-1: 9131c4e101039c98c10f13edf06b8134086a492d SHA-256: 6f4779d62650948f96dbbbc806de2ac0741fb2a2e6da69965e99280f5ee226a7
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector (ttraff.cc), and is flagged by ML classifiers as malicious. The document body, though partially corrupted, contains text related to an 'Automatic water irrigation system project report' and includes the malicious URL, suggesting a lure to redirect users to potentially harmful content. The presence of many external PDF links further indicates a link farm or redirection strategy.

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.cc/pify?keyword=automatic+water+irrigation+system+project+report
    • http://files.tricomimpress.com/uploads/1/3/1/0/131070688/tisuporotikubo.pdf
    • http://files.harmonybathandbodyvi.com/uploads/1/3/2/6/132681501/8223de5bdb42.pdf
    • http://remixib.kellyobrienart.com/uploads/1/3/1/4/131437626/421bfa55ccdb.pdf
    • http://files.deottoalberto.com/uploads/1/3/1/4/131437194/6b14a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/zatulodopikopeberavupugo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2036/9576/files/mimumokug.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4087/files/64840358187.pdf
    • https://cdn.shopify.com/s/files/1/0438/2749/5074/files/rugaginapuxonixidowevig.pdf
    • https://cdn.shopify.com/s/files/1/0429/7090/6780/files/49731431057.pdf
    • https://cdn.shopify.com/s/files/1/0430/6970/2306/files/19326983167.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/14145836318.pdf
    • https://cdn.shopify.com/s/files/1/0440/5913/2054/files/console_command_to_go_to_dark_room.pdf
    • https://cdn.shopify.com/s/files/1/0436/9213/0458/files/jetixomexuxalozumuvovi.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/xegowaxiboxagurigufetedip.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_off00006bdf.bin
efc01f93642d0163002fdb75b3ddb60dfa926df96783d58cdc213e2e07666793
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDF 5480 bytes
font_01_sfnt_off00007e84.bin
7e18f0f680bea60c8513b0ecb7a4655c8e7a9911c7f7813a244b738d438e3624
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E84 10108 bytes