Malicious PDF — malware analysis report

Static analysis result for SHA-256 345f108771404465…

MALICIOUS

PDF

42.3 KB Created: 2020-08-05 06:26:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfaeef796e2690013cf9f0f5fa51beef SHA-1: f5f277884055a552671d78c73e789cc733cff23b SHA-256: 345f10877140446542064f50e41325be85020f51eb48fa14e852fab451a49863
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary redirector URL being 'https://ttraff.com/pify?keyword=nj+assisted+living+regulations+pdf'. This URL is flagged as malicious, indicating a likely attempt to redirect users to harmful content. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm designed to obscure the malicious destination. No scripts were extracted, but the PDF structure itself is the delivery mechanism.

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=nj+assisted+living+regulations+pdf
    • http://files.jecreativity.com/uploads/1/3/2/3/132303170/rowusilapi-pejibug.pdf
    • http://sopuweri.nanmillertimes.com/uploads/1/3/0/7/130739615/gixevufopotevafuk.pdf
    • http://files.jasonmarshallconsulting.com/uploads/1/3/1/4/131406649/doviziruvepebaju.pdf
    • http://files.brittanypatel.com/uploads/1/3/1/4/131482941/galekukawato.pdf
    • http://files.sheacarring.com/uploads/1/3/0/7/130776149/nedafibulitopim-kawazokave-bojodefu-lawuror.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/77501399778.pdf
    • https://cdn.shopify.com/s/files/1/0437/5176/8225/files/sipeniwixigasafaboles.pdf
    • https://cdn.shopify.com/s/files/1/0438/2290/7549/files/18212791507.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/42829777883.pdf
    • https://cdn.shopify.com/s/files/1/0433/9793/9367/files/bozepufaxivuseza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xewujixamugovaginebutomo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/18609296185.pdf
    • https://cdn.shopify.com/s/files/1/0435/1324/9944/files/list_of_common_countable_nouns.pdf
    • https://cdn.shopify.com/s/files/1/0435/0243/6512/files/2009_mitsubishi_galant_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/88186461515.pdf
    • https://cdn.shopify.com/s/files/1/0432/0323/1908/files/22117747876.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/fisunufiwina.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_off00006895.bin
51b14e63c6b48cb61037ed4dbb7d676d1783ac822185f3fb6bb1e5a3d2dd1a8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6895 5316 bytes
font_01_sfnt_off00007ac9.bin
6cf32042d33b375460d9976245cc75fdab15345fdea789b1ce639924e68da1d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC9 9816 bytes