Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecdc457b53ab47f2…

MALICIOUS

PDF

41.3 KB Created: 2020-08-14 22:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fc3788976efa82fdfebdd18bf548d77 SHA-1: 72602ef2f445f3aae5e78fe42e3fcb96644b50f9 SHA-256: ecdc457b53ab47f21c699bedd9198bb491108dbb5eb79fbe139c93070a755183
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'black skull wallpaper hd for android' and the malicious URL, suggesting a lure for users. The presence of a PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing strongly indicates the intent to redirect users to harmful content. The file also exhibits characteristics of a PDF link farm, further supporting the malicious intent.

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.ru/pify?keyword=black+skull+wallpaper+hd+for+android
    • http://files.shilohchristianband.com/uploads/1/3/1/0/131069766/wivadote.pdf
    • http://pumuvo.cheetahfloorsystems.com/uploads/1/3/1/0/131070313/0dc0203dc9d3.pdf
    • http://zadanusew.oilpastelsmudge.com/uploads/1/3/1/3/131382274/e3098437b.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdf
    • https://cdn.shopify.com/s/files/1/0433/4485/5195/files/59433106713.pdf
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/fifaxaxom.pdf
    • https://cdn.shopify.com/s/files/1/0433/3663/0422/files/monolezavebe.pdf
    • https://cdn.shopify.com/s/files/1/0437/0939/9192/files/milliseconds_to_hours.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/zepasuvami.pdf
    • https://cdn.shopify.com/s/files/1/0428/9649/0655/files/arioso_cello.pdf
    • https://cdn.shopify.com/s/files/1/0433/9951/2231/files/59706294553.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/1097890321.pdf
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/xonojik.pdf
    • https://cdn.shopify.com/s/files/1/0433/2034/4731/files/fesonuroxexuxolesi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/65143046101.pdf
    • https://cdn.shopify.com/s/files/1/0433/7660/7390/files/birla_sun_life_vision_life_income_plan.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_off000062c1.bin
6bbd4f8e74f7e20928e5d91490d5004889d45260356ae7e4e85a036269155c53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C1 5448 bytes
font_01_sfnt_off00007555.bin
597f2971215fd36256e8350d35341aea9e5ab663185a4573bb1b2fa7284ded55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7555 10200 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.