Malicious PDF — malware analysis report

Static analysis result for SHA-256 393c8ac30de81f3e…

MALICIOUS

PDF

42.7 KB Created: 2020-08-06 15:09:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d5b2570fecd091262448aa65da39a63 SHA-1: 86dc2d93a828378d3cc345b2adf1bfdafad9b854 SHA-256: 393c8ac30de81f3eee35efd4d2eaf3d76754be9c4362e0288047f6c790312765
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to '2020 calendar with week numbers printable pdf'. The presence of a link farm and a critical heuristic firing for malicious redirector links indicates a phishing or redirection attempt. No scripts were extracted from this sample.

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.com/pify?keyword=2020+calendar+with+week+numbers+printable+pdf
    • http://files.kevinmaillard.com/uploads/1/3/0/9/130969633/3555956.pdf
    • http://files.portraitsforpits.com/uploads/1/3/1/4/131407705/6b925bd53984cb.pdf
    • http://files.interactivecapitalgroup.com/uploads/1/3/1/6/131606546/kabujomeduv_worozorixop_piridabobap.pdf
    • http://files.eye-of-iris.com/uploads/1/3/0/9/130969960/vuwuwavepotoro_wivudorag_wunoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8363/6644/files/93567088251.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1058/files/goxut.pdf
    • https://cdn.shopify.com/s/files/1/0431/2170/5124/files/95067433917.pdf
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/anime_hidden_eyes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8402105605.pdf
    • https://cdn.shopify.com/s/files/1/0430/1501/2511/files/23827797038.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/functional_skills_level_2_maths_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bukidesokat.pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/fakomosod.pdf
    • https://cdn.shopify.com/s/files/1/0432/3583/6072/files/32300004158.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/tulisidiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/tosiwukiwabavibofaxiten.pdf
    • https://cdn.shopify.com/s/files/1/0434/2317/0710/files/5e_criminal_background.pdf
    • https://cdn.shopify.com/s/files/1/0432/4550/2626/files/61619448255.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/pdf_dieta_atkins.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_off00006777.bin
b19705f2aa10049572ede27c1a98e8ed9bcb4ed9293221500a924039e2c73e42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6777 5872 bytes
font_01_sfnt_off00007b49.bin
d33529bcfe30b91948552123e98cc396998eb5d328a84cb441290daafebffc41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B49 10080 bytes

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