Malicious PDF — malware analysis report

Static analysis result for SHA-256 4090559200bf25c1…

MALICIOUS

PDF

34.5 KB Created: 2020-08-03 09:56:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d95b3f926b6744a3e9952fecc359579 SHA-1: 8787d58ca835245339e2b390c5348299311d062c SHA-256: 4090559200bf25c17b35b76d47c3dc6aff904b22c274d559e6df94ca5b912162
188 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector URL, masquerading as a property tax statement. The presence of a 'LOLBin run command' heuristic suggests that the document may contain instructions or embedded commands for execution, likely to facilitate the download or execution of a secondary payload. The document body's content and the heuristic 'SE_INVOICE_LURE' indicate a phishing attempt.

Heuristics 6

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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.ru/pify?keyword=dakota+county+property+tax+statement
    • http://files.daisymaeboutiqueshop.com/uploads/1/3/1/8/131871859/1998dbe32.pdf
    • http://files.masoncitychristian.com/uploads/1/3/0/7/130740391/xigisupokijuwu.pdf
    • http://files.betsyleebaileymusic.com/uploads/1/3/1/4/131437552/megumina-furabi-sagoribaropir-lugeki.pdf
    • https://cdn.shopify.com/s/files/1/0436/6237/7113/files/nalotis.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/xowekiweserazajamu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0636/9703/files/75161755747.pdf
    • https://cdn.shopify.com/s/files/1/0438/9437/4555/files/auto_tune_demo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3065/9750/files/70032230744.pdf
    • https://cdn.shopify.com/s/files/1/0437/8371/7015/files/xedomajorowutisana.pdf
    • https://cdn.shopify.com/s/files/1/0449/5484/5352/files/raspberry_pi_cmdline._txt.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/10101038597.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xatet.pdf
    • https://cdn.shopify.com/s/files/1/0433/5583/2469/files/37178937306.pdf
    • https://cdn.shopify.com/s/files/1/0435/1806/6842/files/guligitofizasiwugesekuxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/67762340320.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_off00004967.bin
9defa978ca90fa0aef8b5a4a8a14160bd2d5793a3b1acdee507e0a3c9b7ae44c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4967 5280 bytes
font_01_sfnt_off00005b60.bin
e0c451f78e984ac11822a497f169976aaa7fbde50de9ab0c698c2fb85c40827e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B60 9864 bytes

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