Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7e27452bb68d6ac…

MALICIOUS

PDF

108.8 KB Created: 2020-08-16 14:00:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2374d3d0885421c376a30908fc87fddd SHA-1: 32a0a8bc177c0a671ae296b6c0cc6958c833378a SHA-256: b7e27452bb68d6ac43d4a81f3cfca30437badbe52e66d95bb19ee5df7082363c
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of external links, many hosted on 'cdn.shopify.com'. The document body contains a call-to-action phrase, suggesting a lure to click the malicious link.

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.com/pify?keyword=5000+chinese+characters+pdf
    • http://files.lcmamusic.com/uploads/1/3/0/7/130739201/5857517.pdf
    • http://files.fromthescriptures.org/uploads/1/3/1/3/131398094/tuvapo.pdf
    • http://jirogisi.paulbrownsalons.com/uploads/1/3/2/7/132712615/taxugebe.pdf
    • http://files.serdirection.com/uploads/1/3/1/4/131437924/7235cb3f599aaf.pdf
    • http://files.kimberleyashleecatering.com/uploads/1/3/0/7/130739690/wiwaxupoxadawex_bawulixi_jajisar_lerazim.pdf
    • https://cdn.shopify.com/s/files/1/0432/7456/7833/files/sinogeto.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/sai_baba_madhyan_aarti_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8674/9600/files/wunupediwolulakumofiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/47225533981.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/josedotozo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/amsterdam_travel_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/2609/6036/files/xegeni.pdf
    • https://cdn.shopify.com/s/files/1/0436/2518/5442/files/wicked_perversions_mod.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/74684371505.pdf
    • https://cdn.shopify.com/s/files/1/0437/7313/2957/files/gujaridaru.pdf
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/nudavufimi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0665/5642/files/limojegikoz.pdf
    • https://cdn.shopify.com/s/files/1/0440/8311/8232/files/25631673547.pdf
    • https://cdn.shopify.com/s/files/1/0430/7668/1882/files/fofovape.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_off000104cf.bin
2d96ae398fb2482d35e633e7c6ce119b2e15e117dc2094efad0753a72a589fae
pdf-font-stream PDF embedded font (sfnt) at offset 0x104CF 30100 bytes
font_01_sfnt_off00016183.bin
c997107d1b03033f8d7d3b571683b20522b08461b9930742f1babc0d6e48bdba
pdf-font-stream PDF embedded font (sfnt) at offset 0x16183 5380 bytes
font_02_sfnt_off000173bd.bin
efbdddaf557b46fe21b264cf79cb774c762b4d56a98477f298d177c409c66ee3
pdf-font-stream PDF embedded font (sfnt) at offset 0x173BD 16604 bytes