Malicious PDF — malware analysis report

Static analysis result for SHA-256 563d207716a0109c…

MALICIOUS

PDF

41.8 KB Created: 2020-08-26 19:41:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08a32252ecbe16c2d5dfe9a7bde105a9 SHA-1: 7ded02721bb941ebabbb7b9581705fd57905f7bf SHA-256: 563d207716a0109c98c31f740a68f69ce4cc172b650ec165d99477409d4c7754
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm and a specific redirector URL, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious. The primary malicious URL identified is https://ttraff.cc/pify?keyword=retail+pro+9+user+manual, which is a known malicious redirector.

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=retail+pro+9+user+manual
    • http://files.royal-arsenal-history.com/uploads/1/3/1/8/131871499/deriwiwa_ranifilujomi_futiviv_dimuse.pdf
    • http://jufetojo.mohamedalkhoori.com/uploads/1/3/2/7/132740214/95cc93ba6.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/leona_lewis_spirit.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/69896850173.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/jukagixademewakukibaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemisavixazesunomezixe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6267/3054/files/bazodijabat.pdf
    • https://cdn.shopify.com/s/files/1/0462/0360/1049/files/najeboxaluzukizanas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/woziki.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3556/files/ejercicios_tiempos_verbales_espaol_para_imprimir.pdf
    • https://cdn.shopify.com/s/files/1/0431/6522/1023/files/86614684274.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_off00006589.bin
caa49dfd44dbdde25e4ab7003e07f6505a29e9c9a60c2053e278a1829c8a55c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6589 5128 bytes
font_01_sfnt_off000076e0.bin
617af0a483a66f04b1380687bc69e01cdb1c3d007aef0df9ddcc8c2996f452de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E0 10516 bytes

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