Malicious PDF — malware analysis report

Static analysis result for SHA-256 dafab32da28c774d…

MALICIOUS

PDF

41.6 KB Created: 2020-08-23 14:54:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac53c67b69ea450dff675811560431c4 SHA-1: 80ae69f191803c7c96ec1974351bf6f443f4f8b2 SHA-256: dafab32da28c774dc05ffd414970b26029a32b78a2b7b8d25abf96393eb9d2d9
128 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links redirects to a known malicious redirector. The document body, though partially corrupted, contains text related to 'business card templates free' and a call-to-action phrase, suggesting a lure to trick users into clicking the malicious links. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination.

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.ru/pify?keyword=business+card+templates+free
    • http://files.halonades.com/uploads/1/3/1/4/131408209/lumezinixumuxu.pdf
    • http://files.fisherphotoanddesign.com/uploads/1/3/1/4/131453250/7980238.pdf
    • http://files.allcityelectricalie.com/uploads/1/3/2/8/132815206/9a9ae31419.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/woxaxalunuzoragoza.pdf
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/fewomizumerovejowotowume.pdf
    • https://cdn.shopify.com/s/files/1/0434/4230/7239/files/loliburafibuzeneg.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4049/files/lodepasakavaburojezeke.pdf
    • https://cdn.shopify.com/s/files/1/0434/7409/2198/files/70252754178.pdf
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/23825518375.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5293/files/woreweka.pdf
    • https://cdn.shopify.com/s/files/1/0428/5156/5724/files/96638610550.pdf
    • https://cdn.shopify.com/s/files/1/0435/4139/7656/files/leviwepafakir.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_off0000652d.bin
2ef90efb37b6b7fae8d1942fa55bba685b7d5ba132f3eda906ef2c347b1fc501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x652D 5348 bytes
font_01_sfnt_off0000773e.bin
bda98da22f05d204e9a78a49224658bc2eb6c4e9159989efc16de6de688b67b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x773E 10160 bytes

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