Malicious PDF — malware analysis report

Static analysis result for SHA-256 78a12e19c786a2cd…

MALICIOUS

PDF

55.1 KB Created: 2020-08-25 16:28:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9265885bd212ddb108a720b93a1773fe SHA-1: 98b51d457541d2dee57000d0b61490b3be743f36 SHA-256: 78a12e19c786a2cdcbfb6d78fc0793243c9b656d9eff18d19453bae81e66bf80
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=raju+bhai+telugu+songs+free++doregama, which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content. The ML classifier strongly indicates maliciousness.

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=raju+bhai+telugu+songs+free++doregama
    • http://files.hummmusic.com/uploads/1/3/0/8/130815437/worigugasomuta_raxadabenosali_sevexe.pdf
    • http://wumum.witnessestointernment.org/uploads/1/3/0/7/130738721/fbbad4fe363.pdf
    • http://files.sellingtravel.net/uploads/1/3/0/9/130969545/1afb6fbac0e736.pdf
    • http://fakawa.rcmcm.com/uploads/1/3/1/1/131163992/ea264ab2d57f13.pdf
    • http:///\/www.lyricsintelugu.com\/2010\/10\/evvare-nuvvu-song-lyrics-raju-
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/99758943334.pdf
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/united_states_chile_free_trade_agreement_certificate_of_origin.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/acorn_130_installation_manual.pdf
    • https://cdn.shopify.com/s/files/1/0443/1269/0844/files/building_construction_drawings.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/7584036285.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4957/files/christmas_letter_template_free_printable.pdf
    • https://cdn.shopify.com/s/files/1/0431/4788/6743/files/73511377703.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8453/files/83728968807.pdf
    • https://cdn.shopify.com/s/files/1/0437/9394/0629/files/putezeledusizowamosaxal.pdf
    • https://cdn.shopify.com/s/files/1/0428/6332/9446/files/28880723921.pdf
    • https://cdn.shopify.com/s/files/1/0431/8383/3249/files/tefojetekovukuwokido.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/mevizabagewewobedakugexog.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cba.bin
43d86e30c10cf138c47f10fa7fbea7953d0db9e49f5c09b64fc56504a2f791db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBA 5544 bytes
font_01_sfnt_off00008f6a.bin
7e2a524a5a7c9a6a997f952e7b5ee10524b7a4fb3e8c42ec1e1c09d2c4ade291		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6A 13184 bytes
font_02_sfnt_off0000b914.bin
fd4a3fdb33c95e9b378da15ee835735b7e677051efa9a957f6351a1fade2b5ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB914 16100 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.