Malicious PDF — malware analysis report

Static analysis result for SHA-256 91c64d6c7da915f9…

MALICIOUS

PDF

50.3 KB Created: 2020-08-19 09:08:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63feca54ddb7ffce2c632ff1593e2bfd SHA-1: d208f7d437263f1052704eef2698f94b03e51199 SHA-256: 91c64d6c7da915f9a4056c429d03b384fbdebfdabde312c60360aff1185307e8
140 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating an attempt to direct users to potentially harmful content. The heuristic 'SE_CALLBACK_LURE' suggests a social engineering pretext, possibly related to fake billing or subscription issues, to encourage user interaction with the malicious links. The document body itself is heavily obfuscated and contains the malicious redirector URL, reinforcing the attack pattern.

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=traffic+report+betsy+ross+bridge
    • http://files.christiefencing.co.uk/uploads/1/3/1/4/131408024/botulizulubi.pdf
    • http://files.agricolacuvelier.com/uploads/1/3/1/4/131452836/46cdb03.pdf
    • http://files.mamajourneys.com/uploads/1/3/1/1/131163540/70e183e2b8.pdf
    • http://sajulo.trlegacypartnership.org/uploads/1/3/1/4/131437987/0d5b19c157.pdf
    • https://cdn.shopify.com/s/files/1/0428/9508/1635/files/76142386381.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/72364512252.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/kamopifegetanarepem.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/zesagoloj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9712/9109/files/zibiwogogoxazogilukuve.pdf
    • https://cdn.shopify.com/s/files/1/0437/7732/7265/files/gukenarukukenivorod.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/71028824608.pdf
    • https://cdn.shopify.com/s/files/1/0429/2457/2835/files/vimorifawasikal.pdf
    • https://cdn.shopify.com/s/files/1/0431/7052/9436/files/little_rascal_scooter.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_off00007864.bin
b1ac668c847fbd327cde0cc2104a559bd8acaa1568d95f0adf3b6921d27b977a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7864 5164 bytes
font_01_sfnt_off000089fe.bin
5525f357b0f9d3db23fb3271580e6d6fae093ee81e936257f3f2748e84eb16c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x89FE 10620 bytes
font_02_sfnt_off0000ae6a.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE6A 4324 bytes