Malicious PDF — malware analysis report

Static analysis result for SHA-256 483f2555335cd284…

MALICIOUS

PDF

44.1 KB Created: 2020-08-13 09:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aee9ffed4b8bc3bd3eac074eda3cdafe SHA-1: f5ddda57ec3a2c6146ce0af2da57baa07bcc6bc9 SHA-256: 483f2555335cd284b8d4880c3e8875e4fac5428fc3c4ff21f68f817b9be4a592
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a manual download, which leads to a link farm hosted on Shopify. The primary malicious URL is https://ttraff.cc/wb?keyword=avometer%208%20mk%203%20manual. The document body contains obfuscated text and the malicious URL, indicating a social engineering attempt to trick the user into clicking the link. The presence of a visual download button further supports this lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=avometer%208%20mk%203%20manual
    • http://mimanubip.utahpeers.org/uploads/1/3/0/7/130739656/639bba.pdf
    • http://mazufuxud.annarbortreeservice.net/uploads/1/3/1/4/131406893/2930818.pdf
    • http://files.ronmb.com/uploads/1/3/2/6/132696233/6813660.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/gukevigapudo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0028/2783/files/33263023007.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tijubijevuvikupox.pdf
    • https://cdn.shopify.com/s/files/1/0428/1987/9079/files/kajixaxap.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/1973080430.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/bilanzen_erstellen_und_lesen_fr_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0432/2718/5309/files/47636475081.pdf
    • https://cdn.shopify.com/s/files/1/0434/7455/0950/files/72784873771.pdf
    • https://cdn.shopify.com/s/files/1/0452/7321/9234/files/certificat_de_cession_vehicule_cerfa_13754.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_off00007014.bin
fe89dc3b52e8ca6f2fac0d78f6a7f98eb58819ca8483ca1c99a33c6b4c24d373		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7014 5124 bytes
font_01_sfnt_off00008174.bin
79aae389bb74e4bb10e510648dcfec03294db48379d392c15c7f2e50033eeb87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8174 10196 bytes

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