Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35333a34161daa5…

MALICIOUS

PDF

101.8 KB Created: 2020-08-11 06:52:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0e906cfd576e3bc7787eb4b9e340e3d SHA-1: 0339b0c8c3e0acd60c1d5cf63a61c0c8759ab40e SHA-256: e35333a34161daa5ccdb0363a9653a707df15d43d33c7266927de377bdbac283
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a cactus and succulent manual. This redirector likely leads to further malicious content or malware download. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on Shopify. The ML classifier strongly indicates maliciousness.

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=manual+de+cactus+y+suculentas+pdf
    • http://mabod.cityreachswissvale.org/uploads/1/3/1/4/131437502/8650411.pdf
    • http://files.emeraldcityreviewer.com/uploads/1/3/0/9/130969811/9b0f4e75c5c23b2.pdf
    • http://files.getfitbestrong.com/uploads/1/3/2/6/132682822/daaba3.pdf
    • https://cdn.shopify.com/s/files/1/0438/8985/2568/files/64757639946.pdf
    • https://cdn.shopify.com/s/files/1/0435/3903/8360/files/belajar_investasi_saham.pdf
    • https://cdn.shopify.com/s/files/1/0430/2215/5930/files/bangalore_university_time_table_2020_bcom.pdf
    • https://cdn.shopify.com/s/files/1/0437/0219/0235/files/four_distinctive_characteristics_of_services_marketing.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/89472520979.pdf
    • https://cdn.shopify.com/s/files/1/0428/6955/5359/files/48437192013.pdf
    • https://cdn.shopify.com/s/files/1/0435/9153/2699/files/58854008093.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/vorebimiboruwag.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57355052908.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/44663422222.pdf
    • https://cdn.shopify.com/s/files/1/0428/8466/1407/files/40210893871.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4993/files/venuzejajokop.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/allan_quatermain.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/65382151654.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/guriwuziwu.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_off00014e6e.bin
2e895d50de2dfafbbf5848758e6161ed345345d5ae23f584bada5e5878ec72f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14E6E 5160 bytes
font_01_sfnt_off0001601d.bin
7083d3a6b316ce862a8e835f1ee0cafcba5e08e67fa69238f8dc824feb3ac9ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1601D 12396 bytes

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