Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4a4a61447ed4a16…

MALICIOUS

PDF

54.8 KB Created: 2020-08-20 09:51:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 781e925616cdaa2225e6a95732978525 SHA-1: 9ef88d2807db08effb8bf0f6d4f602366fb04305 SHA-256: d4a4a61447ed4a16156abbb5dfd7a88ca2d83f68016e6d705f49baa18c2b2e32
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. Another heuristic flags a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify-hosted PDF files, suggesting a coordinated effort to distribute malicious content or manipulate search results. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=antoine+hubert+accident+report
    • http://files.maskmartin.com/uploads/1/3/1/4/131453256/2030042.pdf
    • http://files.u-surge.net/uploads/1/3/1/4/131438477/tojud.pdf
    • http://files.poorhousecandles.com/uploads/1/3/1/4/131437532/zugudedarobupid-minewar-romegutogisikul-wexiz.pdf
    • http://files.photoportraitofyou.com/uploads/1/3/1/4/131409677/d1389f5f63efb42.pdf
    • http://files.thechurchwithamission.com/uploads/1/3/1/3/131398406/dcedefac3047594.pdf
    • https://cdn.shopify.com/s/files/1/0433/9315/5237/files/mortal_kombat_2_snes_moves.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/wulixoropisipefezivoji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9862/0569/files/vojodulotub.pdf
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/accuweather_westminster_md.pdf
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/bell_s_palsy_physical_therapy_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0436/2996/9561/files/jomiwowajemurubat.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/cfp_study_material.pdf
    • https://cdn.shopify.com/s/files/1/0428/0628/0355/files/small_group_guided_tours_japan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29426312843.pdf
    • https://cdn.shopify.com/s/files/1/0435/7508/3171/files/dasuleko.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007fb5.bin
ed814a0348b2271cab885d49a74087f43f7f8e561516897798eb7ec4434f4415
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB5 4964 bytes
font_01_sfnt_off0000907b.bin
9ed5b80f855cc5329cd2f756eee95e1c4d430fab2baa9b4eb3f8b71f48c828e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x907B 15476 bytes
font_02_sfnt_off0000c03b.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xC03B 4324 bytes