Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e23d1e5a4e1416…

MALICIOUS

PDF

53.8 KB Created: 2020-08-07 22:24:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86088850e06cae13e19e71921fc49c9a SHA-1: 978809f256fd56b4723549b7af810d9e699a47f4 SHA-256: b2e23d1e5a4e14161e056ac50677bf9e95acd2157390523a2b1dd5610adb006e
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.com/pify?keyword=asme+boiler+pressure+vessel+code+section+viii+pdf', is designed to lure users into clicking through to potentially harmful content. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of a large number of external links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to obscure the true malicious destination.

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=asme+boiler+pressure+vessel+code+section+viii+pdf
    • http://files.westexaudioelectronics.com/uploads/1/3/0/7/130776298/gutawawixi-sufaralipisozib.pdf
    • http://tipisurab.shoprosethorn.com/uploads/1/3/1/8/131856725/kerojujipunim-xijil-jujokurekelawer.pdf
    • http://xosofurar.freeheartranch.com/uploads/1/3/1/6/131637016/jivura.pdf
    • http://files.dmet87.com/uploads/1/3/1/4/131437680/futoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/4184/1575/files/pusaropatugalebel.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/11113678193.pdf
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/xukapax.pdf
    • https://cdn.shopify.com/s/files/1/0435/3117/4039/files/dark_souls_2_mastodon_halberd.pdf
    • https://cdn.shopify.com/s/files/1/0431/4670/7104/files/zeromowozalupujajavu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/74475738038.pdf
    • https://cdn.shopify.com/s/files/1/0433/1801/8216/files/46498054326.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdf
    • https://cdn.shopify.com/s/files/1/0428/4055/5676/files/gidonurigopanivunokixine.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/surerolifilo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9875/7538/files/6702738344.pdf
    • https://cdn.shopify.com/s/files/1/0429/4675/6774/files/sample_auto_insurance_policy.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_off00008702.bin
46c648ae038732f815c4ba8296fd97ba8fd279c2bd4c64c57d3c840ff85be819
pdf-font-stream PDF embedded font (sfnt) at offset 0x8702 5160 bytes
font_01_sfnt_off0000986d.bin
15eb3e9deceeaa4d0b55ec0909f324828fef8fd911ed2115e17b1a09b2c2762b
pdf-font-stream PDF embedded font (sfnt) at offset 0x986D 10204 bytes
font_02_sfnt_off0000bb66.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB66 4324 bytes