Malicious PDF — malware analysis report

Static analysis result for SHA-256 c04c0acb71f2a0a2…

MALICIOUS

PDF

43.5 KB Created: 2020-08-14 00:48:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3f4d25f5bc43d54137f42073f404e92 SHA-1: 667e95fcb4e5259f6eda369f908a38d6ced59784 SHA-256: c04c0acb71f2a0a2ab7e514249ba1caf06779a42ed1f58370257c08ccd251f0c
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which points to 'ttraff.com'. The document body also contains this URL, alongside a list of other URLs hosted on 'cdn.shopify.com' and other domains, suggesting a link farm or redirection strategy. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves tricking the user into clicking a link that leads to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=allstays+rv+app+for+android
    • http://mopabuf.massage-solace.com/uploads/1/3/1/1/131164250/garuwufozogeg.pdf
    • http://files.pd-parenting.com/uploads/1/3/1/3/131379706/1d558412b84ca.pdf
    • http://files.ventura21.com/uploads/1/3/1/6/131637081/fubukekefitexo-nupapuvit-pofoji-fofuxod.pdf
    • http://files.jeremy-proulx.com/uploads/1/3/2/6/132681836/6672904.pdf
    • http://files.cbdtruewellness.com/uploads/1/3/1/4/131438658/6601449.pdf
    • https://cdn.shopify.com/s/files/1/0436/2089/2834/files/human_behaviour_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/razikeruranofe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1699/files/goxudege.pdf
    • https://cdn.shopify.com/s/files/1/0432/6824/3624/files/adobe_reader_for_windows_10_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/xubemanijevorul.pdf
    • https://cdn.shopify.com/s/files/1/0434/0852/3416/files/bsc_magazine_november_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8188/4067/files/rowebexeredafazo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/werirupiguzene.pdf
    • https://cdn.shopify.com/s/files/1/0431/0577/9863/files/96310494340.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0931/files/camera_calibration_checkerboard.pdf
    • https://cdn.shopify.com/s/files/1/0430/5672/6165/files/31177216809.pdf
    • https://cdn.shopify.com/s/files/1/0443/8127/4278/files/starcraft_2_patch.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdf
    • https://cdn.shopify.com/s/files/1/0435/0024/1061/files/pisalabegugogodu.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_off00006adc.bin
7232bb457f1711936dc9b83b9178be16fc75cabbce0b692249ec47c16be4491a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADC 5184 bytes
font_01_sfnt_off00007c99.bin
f94d1ad4b6a3bfa74d73b9dc57ec95fc3e3f8c79bcb49be62b89916836608fb1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C99 10748 bytes