Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f79399db637734a…

MALICIOUS

PDF

49.5 KB Created: 2020-08-23 07:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adddd2a787dd2253ac03faa22133aa9a SHA-1: 74da58f2c6e4493be2df54c9447510ffb7e355c0 SHA-256: 9f79399db637734a8bcca99052de9680d7de59f2cc32e5354e4ecc48387e817d
140 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body text, though heavily obfuscated, includes the phrase 'Home rental agreement form arizona' and a URL that appears to be a lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that at least one link directs to known malicious infrastructure. The 'SE_CALLBACK_LURE' heuristic suggests a phishing or tech-support scam context. The primary attack pattern involves redirecting the user to a malicious site via a link disguised as a document. No scripts were extracted from this sample.

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=home+rental+agreement+form+arizona
    • http://kabuti.lodgefarmleisure.com/uploads/1/3/2/8/132814282/3285413.pdf
    • http://files.arlingtontherapyalliance.com/uploads/1/3/1/3/131379543/1777814.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86562581376.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/liluwebirarelisi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38655606666.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/lepizufamofuxojifa.pdf
    • https://cdn.shopify.com/s/files/1/0437/3096/0536/files/jaxenetu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/fesasubizezogu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/install_cydia_without_jailbreaking.pdf
    • https://cdn.shopify.com/s/files/1/0433/3040/4502/files/ligeji.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_off00008606.bin
56517a9a167b0e9419e25451a1f4e3486a96b72520d1663b4fc42997428bb17a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8606 4920 bytes
font_01_sfnt_off000096ae.bin
ff7c9ff27935b679797c1f8d933013c1550b874d67e3ce82d83f9fb74faf8972		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96AE 10228 bytes

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