Malicious PDF — malware analysis report

Static analysis result for SHA-256 21c27808aa33027e…

MALICIOUS

PDF

61.8 KB Created: 2020-08-10 16:31:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ecb0ebff5a0a24a734efa53295ecac1 SHA-1: 7970b9a5a47923a0866980ac3ce8470741ca29f5 SHA-256: 21c27808aa33027ef79f41f93d91df66967705412bae64c8a1f1f68a2e2b81a7
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=advanced+broadcast+news+production+pdf'. This suggests a phishing or scam attempt, likely to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. No scripts were extracted, and the family is unknown due to the lack of specific indicators.

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=advanced+broadcast+news+production+pdf
    • http://files.boomboombrazil.com/uploads/1/3/1/1/131163712/fulenif.pdf
    • http://files.asteripursuit.com/uploads/1/3/1/0/131070207/punomeko.pdf
    • http://kemadesa.anindodeyphotography.com/uploads/1/3/1/4/131482975/b649ed.pdf
    • http://zitatofiz.emprisdurden.com/uploads/1/3/0/7/130738970/50f9ca24b253.pdf
    • http://files.theothertheatrecompany.com/uploads/1/3/0/8/130874480/6022799d.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/64499822112.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5788/files/jerax.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdf
    • https://cdn.shopify.com/s/files/1/0431/2530/9604/files/pibonaneretutij.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/donopifokunav.pdf
    • https://cdn.shopify.com/s/files/1/0431/4248/0021/files/pelemesemobuxivu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5200/6552/files/49488720390.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40545468116.pdf
    • https://cdn.shopify.com/s/files/1/0439/2180/1371/files/agility_guide_rs3.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sagomowaroperovi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/hp_smart_array_p410i_license_key.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_off0000b51b.bin
2568971eed752e05a850441cbd536bd6ee1b5856fc66882be415573e020598c2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB51B 5400 bytes
font_01_sfnt_off0000c78f.bin
486d8da22473d14032e472bfe338dfb267cddaf3c4b3f7d8063205d50cc5c105
pdf-font-stream PDF embedded font (sfnt) at offset 0xC78F 10024 bytes