Malicious PDF — malware analysis report

Static analysis result for SHA-256 c421cb8536c561fc…

MALICIOUS

PDF

45.1 KB Created: 2020-07-28 06:55:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7f6e5cdcc89027aa53a4ad5f495f0e1 SHA-1: 50836decfc0cdb7b89f63eae8d7d852f79a27030 SHA-256: c421cb8536c561fca8e7b7547de2c5bbdee85c78f53311b54a23bd6ff8cd749b
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, with numerous links hosted on cdn.shopify.com, suggesting an attempt to broaden distribution or obscure the final destination. The document body, though heavily obfuscated, contains keywords related to 'marriage certificate request form', aligning with the callback phishing lure heuristic which indicates a pretext for social engineering.

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.
  • 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
  • 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=marriage+certificate+request+form+illinois
    • http://files.santafest.ca/uploads/1/3/0/8/130874380/61e5615.pdf
    • http://files.lnonyxstudio.com/uploads/1/3/1/4/131453484/jubaxat.pdf
    • http://files.ericassimmons.com/uploads/1/3/0/7/130739504/sedejametinedo-nimog-vovigogelukaluj.pdf
    • http://files.0-institute.info/uploads/1/3/1/4/131438353/dikakokiga.pdf
    • http://files.ahcw.org/uploads/1/3/2/8/132815318/5068064.pdf
    • http://files.ericassimmons.com/uploads/1/3/0/7/130739504/sedejametinedo-nimog-vovigogeluk
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/dekelanapuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/2665/3090/files/fasebat.pdf
    • https://cdn.shopify.com/s/files/1/0433/6569/5638/files/66154890892.pdf
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/84870878436.pdf
    • https://cdn.shopify.com/s/files/1/0437/0389/4171/files/4913947544.pdf
    • https://cdn.shopify.com/s/files/1/0428/8839/6959/files/kiloniwurorisukefipulada.pdf
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/nujisojabugifibaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/7496/1059/files/43859691828.pdf
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/51813578307.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7913659608.pdf
    • https://cdn.shopify.com/s/files/1/0433/5026/1911/files/69701086906.pdf
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/74940319350.pdf
    • https://cdn.shopify.com/s/files/1/0431/8724/1119/files/33392094091.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/98423253961.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_off000072db.bin
0d59c15cbd0aaddda82a1dc236c38c85aa5d7d7c23bfd04269aa98f2697d50f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72DB 5216 bytes
font_01_sfnt_off00008480.bin
1a5bbc1a9c0a03ce25093eb3bd48c30484e3e2792f6ad08f6ea605374a946060		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8480 9988 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.