Malicious PDF — malware analysis report

Static analysis result for SHA-256 069b35b5e7796846…

MALICIOUS

PDF

43.0 KB Created: 2020-08-05 10:15:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 797e6d2d885e50f26a2234a5aec6a295 SHA-1: 4d3685ec2d4e969a2521d2c657c663272fae1031 SHA-256: 069b35b5e77968460c5ce658faad9f119c5ecdf4705bc9fcc0ce294223539ff3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the URL https://ttraff.com/pify?keyword=business+plan+samples+for+new+business+pdf. This technique is often used to obscure the final malicious destination and evade detection. The presence of numerous links, many pointing to benign Shopify domains, suggests an attempt to manipulate search engine results or create a deceptive appearance of legitimacy before redirecting to the actual malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=business+plan+samples+for+new+business+pdf
    • http://files.neattucks.com/uploads/1/3/0/7/130776272/xosuvanojedumoli.pdf
    • http://files.tworiversrecovery.com/uploads/1/3/2/7/132740860/91cf8adff.pdf
    • http://files.porchfestndg.com/uploads/1/3/0/7/130775725/movekogazejilelater.pdf
    • http://files.cti.ac.pg/uploads/1/3/0/8/130814157/lalulibenidov.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9505/5765/files/53261542121.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/82429068093.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5293/files/76818120139.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/lisoverowaxatebutoretag.pdf
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/analysing_financial_statements.pdf
    • https://cdn.shopify.com/s/files/1/0429/5213/0716/files/fexawemubonexakururelamip.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1638/files/daguduvibasuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/5576/6942/files/kevifet.pdf
    • https://cdn.shopify.com/s/files/1/0431/2809/4882/files/29003655810.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/aaron_smith_dancin_krono_remix.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4659/files/bozaxitijupobip.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069d7.bin
5d0d8450baedd4e1f29deafc7b1c2e5cb15749652487153c08a637e36fde6273		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69D7 5468 bytes
font_01_sfnt_off00007c65.bin
230a6e3f307ae8048a2c997154a25568bb648fa56a291b7fd7f0d143dd044c58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C65 10236 bytes

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