Malicious PDF — malware analysis report

Static analysis result for SHA-256 e14369e6b976150f…

MALICIOUS

PDF

47.3 KB Created: 2020-08-08 01:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d04b126a145407afb1be0c9c20307ec3 SHA-1: 7ac9cb5b0a593ae71761190229a89c5d867982f3 SHA-256: e14369e6b976150f2a8d5048386c7ad2dabb0062744996215c8e3ac8a52dd53c
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=alcoholism+books+pdf, which likely serves as a gateway to further malicious content or phishing sites. The document body, though heavily obfuscated, also contains URLs pointing to a link farm hosted on Shopify, suggesting a coordinated effort to distribute malicious links.

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.cc/pify?keyword=alcoholism+books+pdf
    • http://files.thecherigroves.com/uploads/1/3/1/3/131398156/0c09cff1c7.pdf
    • http://nunakoso.steadfasttattoostudio.com/uploads/1/3/0/7/130739704/gaboxoxupux_xubikareme_tubebanotedoz_jitiwebaj.pdf
    • http://files.alzglassandiron.com/uploads/1/3/1/3/131378780/xorumuzesig.pdf
    • http://files.msarrias.com/uploads/1/3/2/6/132681971/680b308e60.pdf
    • http://files.soulandsynergyec.com/uploads/1/3/1/4/131454270/gewolun.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/66644132125.pdf
    • https://cdn.shopify.com/s/files/1/0444/0319/6070/files/functional_skills_english_level_1_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0440/2230/0822/files/the_red_sea_rules.pdf
    • https://cdn.shopify.com/s/files/1/0436/8157/9161/files/triple_scalar_product.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdf
    • https://cdn.shopify.com/s/files/1/0446/7628/4569/files/criminal_psychology_navin_kumar.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/6003/files/wemubinuselegomosebavamus.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/rukavezogef.pdf
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/gifokijubogogatijuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/75569897168.pdf
    • https://cdn.shopify.com/s/files/1/0445/9990/2372/files/easy_spanish_guitar_tabs.pdf
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/17459053707.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/what_is_a_good_ping_for_discord.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f50.bin
c4c82224fc07c5764db16072c9623896b19591c0246d4b7272ab79d37c4f65df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F50 4764 bytes
font_01_sfnt_off00007f65.bin
5cfcb3bf8917c7acb8096cd538b72535ba1156b311cc57a8906f599003d15251		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F65 10060 bytes
font_02_sfnt_off0000a1dd.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1DD 4324 bytes

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