Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc4f82b7457925e5…

MALICIOUS

PDF

34.4 KB Created: 2020-08-31 05:27:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 836bc4efbdfb1594c4c8672cea2b62ee SHA-1: fece51e3ec69e33f6e45ebba276a2796d275e625 SHA-256: dc4f82b7457925e56aa86ef1377b109e099213259e6f3983ef10f3d2a5305567
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 link farm and a malicious redirector, indicating a lure to a malicious site. The document body, though heavily obfuscated, contains text suggesting a movie download lure, which aligns with the callback phishing heuristic. The primary malicious IOC is the redirector URL, which likely leads to a phishing or scam page.

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/wix?keyword=ghajini+filmi+indir
    • https://static.usrfiles.com/ugd/2ac701_6d6367d54741494dae2b1f358d54ee8a.pdf
    • https://static.usrfiles.com/ugd/77d535_e370c5a4f97f48419979a08c5749f940.pdf
    • https://static.usrfiles.com/ugd/05301a_03609cccb3aa445b8acab80d48345af7.pdf
    • https://static.usrfiles.com/ugd/b7ed05_28a620f160c44d9bb7c8a7ae1544c267.pdf
    • https://cdn.shopify.com/s/files/1/0434/2729/9478/files/imperial_armour_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/3971/8552/files/66757707206.pdf
    • https://cdn.shopify.com/s/files/1/0438/5370/9472/files/medatavodadiraku.pdf
    • https://cdn.shopify.com/s/files/1/0438/0937/4365/files/zidozegitatotif.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2255/files/best_calligraphy_guide_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/4203/7150/files/wowugedon.pdf
    • https://cdn.shopify.com/s/files/1/0440/6745/5128/files/97746382452.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/14802411775.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/bazojebokogegobumoruje.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_off000047c2.bin
e99eb80f93169ac47cbcefb538e98e446dacb5327df4c52d39fc0f966e7d6ab8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47C2 5076 bytes
font_01_sfnt_off000058e0.bin
a262e2874c3e6a5490f897f99d614556ec6679af6e13c0e26bfe7278b91d8755		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58E0 10988 bytes

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