Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d498483e34645a…

MALICIOUS

PDF

44.5 KB Created: 2020-08-10 08:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3178a74738432919cd6b1e0b5e3df96b SHA-1: 66c61c3b881eb13708efd12751dbe2677df46b01 SHA-256: b2d498483e34645a80ee622c168244db6897e268f5d61720551b0a61ffc53fdc
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body includes a visual download lure, reinforcing the malicious intent. The primary malicious IOC is the redirector URL, which likely serves as the initial stage for delivering a payload.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=prepositions+of+place+exercises+pre+intermediate+pdf
    • http://luwox.broken-kingdom.com/uploads/1/3/2/6/132683014/pedum_jemube_fuvujemutar.pdf
    • http://files.amyclevelandart.com/uploads/1/3/0/7/130775334/zafop-gevilotezoweleb-kikogokubok-tibaritiriwe.pdf
    • http://wusol.tuxowner.com/uploads/1/3/2/6/132682883/add575c26e.pdf
    • http://files.unconditionallovefoundation.org/uploads/1/3/1/3/131379820/4704392.pdf
    • http://files.tracyoneill.net/uploads/1/3/0/7/130775304/lixarado-nugovod-tirufas.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/xilogusuvonamigi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0342/files/makalah_asphalt_mixing_plant.pdf
    • https://cdn.shopify.com/s/files/1/0429/5750/4668/files/geography_definition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9318/0070/files/atlas_and_classification_of_electroencephalography.pdf
    • https://cdn.shopify.com/s/files/1/0433/4131/6249/files/hydrotherapy_exercises_for_cerebral_palsy.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9735/files/50350676195.pdf
    • https://cdn.shopify.com/s/files/1/0431/2865/1938/files/ryobi_chop_saw.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8661/files/33963391256.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9189/files/suikoden_2_missable_characters.pdf
    • https://cdn.shopify.com/s/files/1/0433/7837/6853/files/pengertian_urbanisasi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7790/1219/files/probability_tree_questions.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/nexoxufaref.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/33849991539.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_off00007084.bin
086db4e19fb3403122b3469d4f9d4ecc388a8e7379ec054462c62d19bfbd75c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7084 5372 bytes
font_01_sfnt_off000082b4.bin
bf6b78cd4e6d7940bf5faa69e873ccf3d2bbcb1fee602df275abc55561cab333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82B4 9896 bytes

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