Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d4423aa06316f7b…

MALICIOUS

PDF

45.7 KB Created: 2020-08-18 16:17:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c4fe8cdbfeead906fe44f9919d7257c SHA-1: c491a1dc0ec66119a3470eec1f3e8357e08c3b9c SHA-256: 9d4423aa06316f7b89336e55b1f5795e78e9972c2c9c685ec4abf5976b8a70f3
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that appears to be a call-to-action for downloading software. This link, 'https://ttraff.cc/pify?keyword=lexis+audio+editor+mod+apk+free', redirects to known malicious infrastructure. The document also functions as a link farm, with numerous embedded links, many pointing to Shopify domains hosting other PDFs, suggesting an attempt to manipulate search engine results or distribute further malicious content. The presence of a visual download button lure reinforces the deceptive nature of the document.

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/pify?keyword=lexis+audio+editor+mod+apk+free
    • http://files.keahisiberianhuskies.com/uploads/1/3/0/7/130739747/8768405.pdf
    • http://lokuwij.carsandcrochet.com/uploads/1/3/1/0/131070314/fofimoserixufa-bunipanib-fuburebuneko.pdf
    • https://cdn.shopify.com/s/files/1/0436/2534/9273/files/5634725850.pdf
    • https://cdn.shopify.com/s/files/1/0433/6497/4742/files/census_information_by_tract.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/tusawi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/dujomejiduz.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/gumezaxabijefusikub.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/74444376442.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/carb_counting_food_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/6805/4949/files/7454974476.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/best_guitar_vst.pdf
    • https://cdn.shopify.com/s/files/1/0432/5572/6238/files/vomojulodiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/17306285017.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/tadug.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006acb.bin
3ac807f50a382e67ffcbcf764bb5c7162b1be82eba7256eba18b39b018361a0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACB 5228 bytes
font_01_sfnt_off00007c83.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C83 1800 bytes
font_02_sfnt_off00008511.bin
59cd8603e6054d972d5502b3e489c43f3c08d6648dd0743fc62fb98d40ec8854
pdf-font-stream PDF embedded font (sfnt) at offset 0x8511 10652 bytes