Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d207e169a7d6bed…

MALICIOUS

PDF

43.9 KB Created: 2020-08-22 04:28:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 686d9ecc857141c8603880c54614e3dc SHA-1: 9c7bd4bae8f493f7f6c78b8d3c0a1cdf0c98215a SHA-256: 6d207e169a7d6bed698c5f9b7ec47d8dc56db1987b1179a12ecee01702bb7115
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'Facebook cover image photoshop template' and a URL that appears to be part of a link farm. This suggests a phishing or social engineering lure to drive traffic 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.com/pify?keyword=facebook+cover+image+photoshop+template
    • http://files.dociamyer.com/uploads/1/3/1/4/131452949/xumedelagadezux.pdf
    • http://zitebox.friendsofwhitworthhouse.org/uploads/1/3/0/8/130814328/9654172.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wefudebavisizaku.pdf
    • https://cdn.shopify.com/s/files/1/0434/2392/4376/files/sistem_pencernaan_pada_manusia.pdf
    • https://cdn.shopify.com/s/files/1/0451/0826/5125/files/60015501878.pdf
    • https://cdn.shopify.com/s/files/1/0440/4844/9686/files/production_of_antibiotics_penicillin.pdf
    • https://cdn.shopify.com/s/files/1/0437/0772/8023/files/dibizagirevanokezolus.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/zemewegitudiguregisuju.pdf
    • https://cdn.shopify.com/s/files/1/0436/1335/6189/files/9949044141.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5702/files/zowav.pdf
    • https://cdn.shopify.com/s/files/1/0435/4247/9000/files/39248035934.pdf
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/ashampoo_video_converter_with_crack_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/0015/8629/files/biggest_loser_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0450/9443/7029/files/pool_allocator_c_performance.pdf
    • https://cdn.shopify.com/s/files/1/0433/3296/0409/files/sofefewivonajeguzorojoziz.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_off00006d03.bin
a048530d5ebb72c5af8991b0a66a611a78b1de56a3e298f65ab8b9a568d82ee3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D03 5568 bytes
font_01_sfnt_off00007fd0.bin
ed04ea567b642f16022420c72954fdbcd2bbfa072a72a26d7893ebc527a3d79d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD0 10212 bytes