Malicious PDF — malware analysis report

Static analysis result for SHA-256 33b5023793b952b9…

MALICIOUS

PDF

43.2 KB Created: 2020-08-06 07:00:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7d39f8d6dd580ba6644e33df01c4180 SHA-1: 2f942fd84f6b1742d5af5f87a3b5df9c13765bbb SHA-256: 33b5023793b952b94af2834f576f3873953867b266174a9403a158b2bec69f8e
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the text 'Landscape ecology book pdf' and a URL that appears to be part of a link farm designed to improve search engine ranking for malicious content. The primary malicious URL is https://ttraff.com/pify?keyword=landscape+ecology+book+pdf, which likely leads to a phishing or malware distribution site.

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=landscape+ecology+book+pdf
    • http://files.jeninottphotography.com/uploads/1/3/2/7/132710669/148162.pdf
    • http://files.riveredgeschoolsreach.com/uploads/1/3/1/1/131163904/zekoji-ladawaguz-goriroj-piponiw.pdf
    • http://files.gbyws.org/uploads/1/3/1/4/131483019/paludizixi-pazibokadelok-xovubonavegazuz-nobuxudisapefod.pdf
    • http://files.matangold.com/uploads/1/3/0/7/130740536/8939316.pdf
    • http://nakaxal.vastcomtech.com/uploads/1/3/2/6/132683188/revonive_lorigaw_defotamasuxoniw.pdf
    • http://nakaxal.vastcomtech.com/uploads/1/3/2/6/132683188/revonive
    • https://cdn.shopify.com/s/files/1/0438/0891/5613/files/tejosurojakujubizo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9625/1304/files/40803714226.pdf
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/acid_reflux_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/girores.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/tintin_comic.pdf
    • https://cdn.shopify.com/s/files/1/0429/1562/7175/files/kudivuzonutova.pdf
    • https://cdn.shopify.com/s/files/1/0435/8632/2600/files/22220804801.pdf
    • https://cdn.shopify.com/s/files/1/0430/0180/6997/files/bixupapuda.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/7646169573.pdf
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/tabla_de_verbos_auxiliares_en_ingles.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_off00006870.bin
ccd009b364f8736e47c9bed0bfd08937fef3b677f8093b9fe4fbe8b9d4da6d5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6870 5472 bytes
font_01_sfnt_off00007b36.bin
cd9763577948b581959840c5044f8a9d4abedeb1a5d62ec845a76453da0e850f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B36 10720 bytes