Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7fda3eab317b4c…

MALICIOUS

PDF

43.8 KB Created: 2020-08-02 01:23:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82256a799b6d3d773d6aec6a94676d15 SHA-1: 76c937b80ad73fb08ee0848a31897c214459cba1 SHA-256: 4e7fda3eab317b4c059166b395fb0a8f70833deb747cbf7b2137a1d4bde14c25
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many hosted on Shopify, which is indicative of a link farm. One of the primary links directs to a known malicious redirector, 'ttraff.com', which is likely used to obscure the final malicious destination. No scripts were extracted from this sample, and the document body is heavily obfuscated, but the presence of the malicious redirector and the link farm structure strongly suggest a phishing or redirection attack.

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.com/pify?keyword=john+deere+gx85
    • http://files.nssla.org/uploads/1/3/1/3/131398008/lenirojigasap_gikorepur_gizawebakid_wedif.pdf
    • http://files.kranefeldpicturesink.com/uploads/1/3/1/1/131163969/kamimebopikakeko.pdf
    • http://files.demanddj.com/uploads/1/3/0/7/130776381/4038264.pdf
    • http://files.alicelynn.com/uploads/1/3/1/1/131164460/9527771.pdf
    • http://files.barrongafford.org/uploads/1/3/0/8/130813755/tubosenokif-kemategivet-menafubiditom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/dazoka.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/tubalulojanogasezutefo.pdf
    • https://cdn.shopify.com/s/files/1/0445/9102/2244/files/chalk_outline_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/simonu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/nufufozemuzewe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nowivozepax.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdf
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/list_of_mortal_kombat_characters.pdf
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/74654318431.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/55530104290.pdf
    • https://cdn.shopify.com/s/files/1/0431/6296/0023/files/zupakafodebilimikiriwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6916/9045/files/bedoxejimazururamesoni.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_off000057b4.bin
f3a22ae0c3f7e47ec0dd77f2176072ba460e35682d40da532f53ad370c25ca7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x57B4 4700 bytes
font_01_sfnt_off00006795.bin
944f292dd95dae1cf161006ff60f2a0446e8d15c4aba53a5fc00b0e5a5a27884
pdf-font-stream PDF embedded font (sfnt) at offset 0x6795 13904 bytes
font_02_sfnt_off0000947b.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x947B 4324 bytes