Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c23ba4e873f9f2…

MALICIOUS

PDF

47.2 KB Created: 2020-08-01 01:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e60c9626e3e621b7a2a5439dcedc3470 SHA-1: c134f87daa347f54193acde082bf358cd7f1e9d5 SHA-256: f0c23ba4e873f9f2982154d53f7e30e38ea070c4813e0e84ccb2eccf06fd5e87
150 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for a game ROM download, and also includes the malicious URL. The presence of numerous Shopify-hosted PDF links suggests an attempt to create a link farm for SEO poisoning or to obscure the malicious redirector.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=fire+emblem+thracia+776+rom
    • http://files.northlandlodge.com/uploads/1/3/0/8/130814081/2091157.pdf
    • http://files.truewealthfg.com/uploads/1/3/1/4/131437834/jubodu-mavatiwodafi-tapavimowi.pdf
    • http://files.gandaconsultinggroup.com/uploads/1/3/1/3/131380337/8205187.pdf
    • http://files.iamcarlageorge.com/uploads/1/3/0/7/130738892/5501968.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/72073868947.pdf
    • https://cdn.shopify.com/s/files/1/0440/3088/6053/files/14187243308.pdf
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/2795207913.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/56885680238.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3336/files/dibibesirasikodizukadik.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3345/files/978423023.pdf
    • https://cdn.shopify.com/s/files/1/0437/1113/5894/files/fixidogeki.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/vegogujud.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/mesibikaremo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76957488457.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/58378944788.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/tuzisekebedonaremov.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_off00007a68.bin
c0c3fd4f38b59cfd48ecfd98384ba5fa2564eef1cbe64ec927437e1ec5263aa8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A68 5188 bytes
font_01_sfnt_off00008bec.bin
48ac780a42db8bd32815c93a91707b79bf178b5cd5da8e226b8441faea5f1408
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEC 10436 bytes