Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0e9a2f98bd5bca…

MALICIOUS

PDF

45.1 KB Created: 2020-08-05 10:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22ff57af35acdb2798f70928e96aa2f9 SHA-1: 6a561e6cd333ea850bd9779a83272b9adc7efa69 SHA-256: cc0e9a2f98bd5bcab3ff5e9ee7991b848b2a9814a500625e8e350b3e4ce44ea3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for containing malicious redirector links and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=arts+meaning+pdf. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and embedded URLs, suggesting an attempt to lure users to external sites.

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=arts+meaning+pdf
    • http://files.chayalester.com/uploads/1/3/1/4/131453132/6e220ca5796a855.pdf
    • http://files.balloonsandbubbly.com/uploads/1/3/1/1/131164310/3794170.pdf
    • http://files.alpha-nursery.com/uploads/1/3/0/7/130776720/9279537.pdf
    • http://nowewem.musemodelsdarwin.com/uploads/1/3/1/8/131856543/f1ccce84f8be80.pdf
    • http://files.balloonsandbubbly.com/uploads/1/3/1/1/131164310/379417
    • https://cdn.shopify.com/s/files/1/0436/5778/9593/files/bupevoloxavebifurerufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/56105624133.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/notadenagefajofakiwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3910/files/anesthsie_tronculaire_dentaire.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3383/files/41399484537.pdf
    • https://cdn.shopify.com/s/files/1/0429/9656/4131/files/19100400882.pdf
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/remikojerepolixadov.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4301/files/3124056661.pdf
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/mulibuma.pdf
    • https://cdn.shopify.com/s/files/1/0430/3087/2215/files/pavapagevepopojawumuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/6334/4280/files/saragepebul.pdf
    • https://cdn.shopify.com/s/files/1/0430/6593/3985/files/77976083360.pdf
    • https://cdn.shopify.com/s/files/1/0431/4103/8229/files/pumajexewozesuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/telaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/foxogiwi.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000702f.bin
020352492c58a485a5172b9bd13fca185f79ce41a2c119ad7cd71015aecf1018		 pdf-font-stream PDF embedded font (sfnt) at offset 0x702F 5320 bytes
font_01_sfnt_off00008230.bin
c55af1a1792226648e19e442819977ab7c26de7fb4eb5d08b3af7bdb47c2abb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8230 10872 bytes

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