Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6746aaa2cfdf286…

MALICIOUS

PDF

45.4 KB Created: 2020-08-09 05:52:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8712546a40d81ee43ca5572e3989d06 SHA-1: 13581a7a1f1a4af844ad23acc031350f56f232de SHA-256: a6746aaa2cfdf286257da195ccdde82475cc847c7883036d21b2b7e60844d4d0
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=atonia+uterina+tardia+pdf. Additionally, it features a PDF link farm with 16 external links, many hosted on cdn.shopify.com, suggesting a broad attempt to distribute malicious content or engage in SEO abuse. The document body, though heavily obfuscated, contains references to urgency, aligning with the 'SE_URGENCY_LURE' heuristic.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=atonia+uterina+tardia+pdf
    • http://files.studiorezonans.ca/uploads/1/3/0/8/130814605/3339645.pdf
    • http://files.asacottrelldar.org/uploads/1/3/1/8/131856042/8980422.pdf
    • http://files.proyecto1867.com/uploads/1/3/2/3/132302913/mozolejemi-vexiramiga-leselu.pdf
    • http://files.mtacdiamondbar.org/uploads/1/3/0/7/130739789/e71f3.pdf
    • https://cdn.shopify.com/s/files/1/0440/0332/8150/files/what_does_under_contract_mean.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rumifagekesodurelakalon.pdf
    • https://cdn.shopify.com/s/files/1/0434/0868/7269/files/82691037240.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9219/files/1985_honda_shadow.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/texigusowemojegovivek.pdf
    • https://cdn.shopify.com/s/files/1/0437/0779/3561/files/zokolusamarubunaded.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/preparation_of_activated_carbon_from_coconut_shell.pdf
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/79396315186.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/toniwevifaxovuded.pdf
    • https://cdn.shopify.com/s/files/1/0436/0978/4482/files/65717118473.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/marofurolopag.pdf
    • https://cdn.shopify.com/s/files/1/0436/9213/0458/files/26612861691.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_off00006f4c.bin
4e600ed31184e38205eeb7770ba517c8b0753998f9283e8b6289339b3561e750
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4C 4812 bytes
font_01_sfnt_off00007fb9.bin
a76d33fcccda754e053501cbe7d1e8bbe3383eee31147d73acfc2bcd972e3647
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB9 13256 bytes