Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b7addb9f46391b3…

MALICIOUS

PDF

42.6 KB Created: 2020-08-30 05:28:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a2c112ad306ebf8899e044a2f2db41a SHA-1: ed574a6bdf7faaa3d268b747d3ecc8dfa8c6af66 SHA-256: 0b7addb9f46391b3b665a303cf8328e593f40a39b1b071cbfb0395494b25510b
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with a keyword related to 'Navy uniform regs glasses'. This, combined with heuristics indicating an advance-fee scam lure and a large number of embedded links, suggests the document is designed to trick users into visiting malicious sites. No scripts were extracted, but the presence of embedded URLs and the scam lure strongly indicate a phishing or redirection attempt.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/wix?keyword=navy+uniform+regs+glasses
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/0fdb6d_fbb43da471e946299d49d0a08849bdc6.pdf
    • https://static.usrfiles.com/ugd/429b25_347251fe996d4df988b1e4dd744f98a4.pdf
    • https://static.usrfiles.com/ugd/3826db_df7cd0026c3145abb3f96d399344484c.pdf
    • https://static.usrfiles.com/ugd/de3d83_7d9bf47cc081424483a8fd8a7fd01234.pdf
    • https://static.usrfiles.com/ugd/4b68be_e1ae84aa7cb84c8494640947c1c24678.pdf
    • https://static.usrfiles.com/ugd/b8c837_440639ac48aa415889b8eed6d5e7fc38.pdf
    • https://static.usrfiles.com/ugd/7e6083_2d3e078d7d53456589b03b278cbc5eb6.pdf
    • https://cdn.shopify.com/s/files/1/0437/9423/5553/files/starbucks_uk_menu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2129/5003/files/toshiba_protable_dvd_player.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/information_sur_le_bouddhisme_wikipedia.pdf
    • https://cdn.shopify.com/s/files/1/0437/7768/7701/files/rinowagefolivufojej.pdf
    • https://cdn.shopify.com/s/files/1/0433/8063/7859/files/5343611400.pdf
    • https://static.usrfiles.com/ugd/a4e402_80c59829f1834e4b9f64ca0316a743c7.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_4e30fb0434bc4b73b2782a5c4927efed.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e66fdcf727c4596b36f7747d3006f46.pdf
    • https://static.usrfiles.com/ugd/9dda13_3838ffb23e134c72a59250a6539406d2.pdf
    • https://static.usrfiles.com/ugd/a382ee_fdbdf74490b24aa485521856956470f8.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_off00006658.bin
eeddda3e3e6611953888d92d74eb79b429d2d79b053c1ee798a9bab4ee063f57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6658 5216 bytes
font_01_sfnt_off00007819.bin
874eb3d01eb4d0df2a4f19421533be2f457b0c62524521f1757a4610dae4cb45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7819 11404 bytes

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