Malicious PDF — malware analysis report

Static analysis result for SHA-256 72129c2f30c70947…

MALICIOUS

PDF

41.7 KB Created: 2020-08-15 00:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6dad42d26e5940753aff09b3608d74b SHA-1: 1b8402619327e5b7a41be3d6b6ddf49236f12b2c SHA-256: 72129c2f30c70947286a10010b6142e8ba86250cac61167540adfa6966d3690e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document body and embedded links suggest a lure related to the Mac App Store and Xcode, aiming to trick users into clicking through to a potentially harmful site. The presence of numerous external PDF links further indicates a link farm strategy, likely for SEO poisoning or distributing malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=mac+app+store+not+ing+xcode
    • http://files.orangehistory.org/uploads/1/3/1/3/131380998/6a7d3c8e67aa6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/pewozenikadaz.pdf
    • https://cdn.shopify.com/s/files/1/0436/2554/5890/files/13635828276.pdf
    • https://cdn.shopify.com/s/files/1/0437/4416/6037/files/75060613877.pdf
    • https://cdn.shopify.com/s/files/1/0433/3201/0152/files/cricket_information_in_marathi_language_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/1541/2632/files/62206591602.pdf
    • https://cdn.shopify.com/s/files/1/0440/3340/9174/files/arcmap_10._4_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0435/2085/2122/files/14390805594.pdf
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/tufiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/56053761754.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/29639095569.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/sojijazulizuzadokuraga.pdf
    • https://cdn.shopify.com/s/files/1/0437/3898/8709/files/9117462867.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006639.bin
3c9d57b6d8a2b1b642df274c6adea8062762e57b288e35051ab5defc01d30ee1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6639 5284 bytes
font_01_sfnt_off0000783e.bin
efbced1ea3215214cb8fc06ecb45d6338b0f7974d8c92e393e4fdbf751ad5c59
pdf-font-stream PDF embedded font (sfnt) at offset 0x783E 10032 bytes