Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be236792c436cf3…

MALICIOUS

PDF

43.2 KB Created: 2020-08-30 13:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6a633bdafbadc0cad1016cb736fd2f1 SHA-1: 3cd263c4d73b9e8f8388642ac33060e45e077fe5 SHA-256: 6be236792c436cf370da7a66922eb0f818b584ebe83b94aab6ff48745841ef88
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to a redirector service, which in turn links to a purported movie download. This is a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests a link farm used for SEO poisoning or traffic generation to malicious 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.club/wix?keyword=the+lion+king+full+movie+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/cc089a_60de64c0f4ae4f9caa7fc4024b63e7f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d77737b94d848dcb854940b484f6258.pdf
    • https://static.usrfiles.com/ugd/b8c837_e32925c4c4944104ad021826a9565fad.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58097506778.pdf
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/90043915158.pdf
    • https://cdn.shopify.com/s/files/1/0432/2246/6727/files/zobuzuxiwapu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5046/6464/files/business_idea_development_process.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nejoxalivivurotuzepebibus.pdf
    • https://cdn.shopify.com/s/files/1/0434/7494/4153/files/newululoxoxogal.pdf
    • https://cdn.shopify.com/s/files/1/0428/0441/2583/files/79554749773.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/93351373338.pdf
    • https://static.usrfiles.com/ugd/69695d_5cbfd7ec8f3748fcbf60383bbe2d5dc8.pdf
    • https://static.usrfiles.com/ugd/f46427_beb5313c1ddf40f6bc2994468f572bf3.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_a6c96a77b83c4a8f92d96d27ad6d45df.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_off0000687b.bin
1707940a1643601c70d68e06eb64860825aa9741968e2470741a27fb4b638221
pdf-font-stream PDF embedded font (sfnt) at offset 0x687B 5212 bytes
font_01_sfnt_off00007a2a.bin
d432fe1575cea661e762a3ab3b01d7a8b9d211504085d07595a91e77fe56e350
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2A 11176 bytes