Malicious PDF — malware analysis report

Static analysis result for SHA-256 99493680fcf0a86c…

MALICIOUS

PDF

43.4 KB Created: 2020-07-31 23:12:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe23d0dfda76382b76a9aa606913c06e SHA-1: 0906382c1224f37329532eb55006060b3018c625 SHA-256: 99493680fcf0a86c9edec885cecf4290ba592e861799c9257ef883d790b7fb90
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=desktop+weather+for+windows+7', is identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to 'Desktop weather for windows 7', indicating a social engineering tactic to entice users to click the malicious link.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=desktop+weather+for+windows+7
    • http://files.medicinewheelrecovery.org/uploads/1/3/0/8/130814343/najuvavob.pdf
    • http://files.306partyrentals.com/uploads/1/3/1/4/131454116/6019467.pdf
    • http://files.cavalierclubvictoria.com/uploads/1/3/0/7/130739287/8345171.pdf
    • http://files.kashimondojo.com/uploads/1/3/2/7/132740399/77f018e3300c34.pdf
    • http://files.octobermoon.shop/uploads/1/3/1/4/131438490/tuzidavidumenipi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/356336494.pdf
    • https://cdn.shopify.com/s/files/1/0437/4478/8634/files/70983920362.pdf
    • https://cdn.shopify.com/s/files/1/0434/7641/8713/files/vevorolilumixarufanukum.pdf
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/makobesobutetanujare.pdf
    • https://cdn.shopify.com/s/files/1/0433/5697/9351/files/turefamusixozekekozev.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5280/files/gibanuzitizabumidejow.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5561128363.pdf
    • https://cdn.shopify.com/s/files/1/0434/1583/0695/files/darejetofetafomod.pdf
    • https://cdn.shopify.com/s/files/1/0440/6099/9830/files/nafitasivamoxanuxoworekar.pdf
    • https://cdn.shopify.com/s/files/1/0429/6343/5679/files/tomixusuvat.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2557/files/51780804964.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5918/files/88821103248.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_off000069e4.bin
a37b436faadebf04c2a4df870a20da4e2378ab0664268cef5dfb342610baf4fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E4 5332 bytes
font_01_sfnt_off00007c26.bin
b00c79bd81b7101e45aed7dbe347a22434ca91c299f7aaf22018c9cef78d95d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C26 10636 bytes

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