Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7a7f2c254131925…

MALICIOUS

PDF

51.0 KB Created: 2020-08-04 07:41:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59e9171748809a0bea1fad870d9a8b8b SHA-1: 5ebd8797303c3854a29e188c61c9b06758ea24db SHA-256: e7a7f2c254131925a1023e71ccb4029f00273e45c8ea50b8f84b7bafedff4391
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 external PDF files hosted on various domains. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=boeing+787+cockpit+layout+pdf`. The document body, though heavily obfuscated, contains text related to the Boeing 787 cockpit layout and the `wkhtmltopdf` tool, suggesting a lure to disguise the malicious intent. The presence of numerous external links, including the identified malicious redirector, indicates a likely attempt to drive traffic to malicious sites or distribute further malware.

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=boeing+787+cockpit+layout+pdf
    • http://files.teenmamagrown.com/uploads/1/3/1/8/131871618/dexebagemud-pajakene-novaxakira-jobijujad.pdf
    • http://files.nabesphotos.com/uploads/1/3/1/3/131380467/rekosaragavume-siropu-zumoxutuno.pdf
    • http://files.pulaskihealthcarecenter.com/uploads/1/3/0/7/130775145/palawuf.pdf
    • http://files.supernaturalentertamitedproductions.org/uploads/1/3/1/4/131455883/visemomitowezij-fezaweku-xevut-kixivim.pdf
    • https://cdn.shopify.com/s/files/1/0431/6636/7895/files/3._5_character_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fufabolip.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/25337320158.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/45398861685.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/32191325306.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/55984554571.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48177964882.pdf
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/jodemibakekavalel.pdf
    • https://cdn.shopify.com/s/files/1/0430/3182/2485/files/69350142626.pdf
    • https://cdn.shopify.com/s/files/1/0440/4386/2181/files/jexewiradapix.pdf
    • https://cdn.shopify.com/s/files/1/0431/5735/6695/files/maziv.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/avril_lavigne_what_the_hell_lyrics.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_off00007fec.bin
af8cfd898bfb6a18da4ec8816f1c1eb2952d65794bcc8a6d24035151309e4b13
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEC 5536 bytes
font_01_sfnt_off00009300.bin
6d2483a583c1498109996b33975c5234017f73719236763120699224b162f2fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x9300 14092 bytes