Malicious PDF — malware analysis report

Static analysis result for SHA-256 b30433345ef85ef3…

MALICIOUS

PDF

43.4 KB Created: 2020-08-02 12:21:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c16f32c003bce1b3e3b04cfa4f3ec9e SHA-1: 6af2a8283bfb6bb6bd3ac39a4e61c1bab97e0866 SHA-256: b30433345ef85ef333626d1f6e683bddb26e70b1bb64fa226c538c3446b937e7
152 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector, and others pointing to a large link farm hosted on Shopify. The document body, though partially corrupted, suggests a lure related to a video game walkthrough. The primary intent appears to be directing users to malicious infrastructure through these embedded links.

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.ru/pify?keyword=star+wars+the+force+unleashed+walkthrough
    • http://files.333-godsendtimesosministry.org/uploads/1/3/2/7/132740270/57f4fdb07c92.pdf
    • http://files.calderawildscapes.org/uploads/1/3/0/9/130969632/7473454.pdf
    • http://files.stopanddecide.com/uploads/1/3/1/8/131871739/buxofo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/vurolitelataborijomozapo.pdf
    • https://cdn.shopify.com/s/files/1/0440/1269/9798/files/90058547681.pdf
    • https://cdn.shopify.com/s/files/1/0433/0822/0574/files/30329202834.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8539/files/51673888929.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/pavelemixavavanu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/sixipewu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3396/files/96848834.pdf
    • https://cdn.shopify.com/s/files/1/0434/2372/7783/files/53661907559.pdf
    • https://cdn.shopify.com/s/files/1/0431/2888/1313/files/toro_lawn_mowers_troubleshooting.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/winoxilerudizixadejugo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6577/0135/files/mario_combat_hacked.pdf
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/34436516999.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_off00006910.bin
1a9fbc8c80a3dfb80bd4518e249dce7b3b76acd4afc71ea38c0f640a3c416d3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6910 5540 bytes
font_01_sfnt_off00007bf8.bin
11952c2e28de88c820a98bdebce6cdd3434018e34c51c0e412371fb2121a0ce0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF8 10812 bytes