Malicious PDF — malware analysis report

Static analysis result for SHA-256 55b0f5673b3c262b…

MALICIOUS

PDF

57.8 KB Created: 2020-08-12 02:54:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 578296eb681920438442416632f49363 SHA-1: dbb40fd248bafaa69eecf33ab36d22ae753e0d78 SHA-256: 55b0f5673b3c262bdf330ec9c3aee34174924bfbd2bc606e0b968a874911e23b
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=nature+and+scope+of+business+research+pdf', indicating a lure to download further content. The presence of numerous PDF links suggests a strategy to distribute malicious content or engage in SEO manipulation for malicious purposes.

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.cc/pify?keyword=nature+and+scope+of+business+research+pdf
    • http://files.phillipsbanini.org/uploads/1/3/2/6/132681209/takedi.pdf
    • http://files.lydiamccarthyart.com/uploads/1/3/0/7/130776781/gudibaxo.pdf
    • http://bokem.growing4hisglory.com/uploads/1/3/0/9/130969352/firedop-nojisimi-najoturakema-zizanimabof.pdf
    • http://gexopufom.buildingtheportugueseempire.org/uploads/1/3/1/3/131383314/6876893.pdf
    • http://files.paventcamp.org/uploads/1/3/0/7/130775551/tevadepuvadoxeriju.pdf
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/audiometria_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.pdf
    • https://cdn.shopify.com/s/files/1/0435/4523/1515/files/wafikefe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/45934327566.pdf
    • https://cdn.shopify.com/s/files/1/0428/8443/2038/files/argumentation_dans_le_discours.pdf
    • https://cdn.shopify.com/s/files/1/0434/1163/6381/files/international_players_anthem_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0429/2644/0607/files/digixuxugegev.pdf
    • https://cdn.shopify.com/s/files/1/0451/4293/3657/files/public_relations_journal_articles.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/dunoxikabezusixejetu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6899/5222/files/74509076507.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3845/files/uniaxial_crystal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31082235151.pdf
    • https://cdn.shopify.com/s/files/1/0436/2554/5890/files/jivozenavetiz.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_off0000a377.bin
3bcafcaa82f98013a034a4c668e986cb7de6d4272fb7500c79af4042437a88c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA377 5320 bytes
font_01_sfnt_off0000b57f.bin
f0d3683c76ecd626c81d85f3cd1a064abfca2a331c75bcdb2786b08cd04b45ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB57F 10564 bytes

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