Malicious PDF — malware analysis report

Static analysis result for SHA-256 d70145e5e50b391e…

MALICIOUS

PDF

33.3 KB Created: 2020-08-10 06:04:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b6a1c88a4ac8fbb4835f7f253e2caf5 SHA-1: 6326725da42a3ca1dbed50dbfd02c616415b053e SHA-256: d70145e5e50b391ea392a4a157a262645ca046f4369508531006380927de43a2
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for an exercise PDF. The primary malicious URL is ttraff.com, which is used to redirect the user to other locations, likely for further exploitation or malware delivery.

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.com/pify?keyword=passive+present+simple+past+simple+exercise+pdf
    • http://duzit.paduastore.com/uploads/1/3/0/7/130775350/bofarupiziruromegi.pdf
    • http://files.nextstepsdaycare.net/uploads/1/3/1/3/131384777/satam.pdf
    • http://files.writingbeyondmargins.com/uploads/1/3/1/4/131436967/9b52d6.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7894/files/12076140884.pdf
    • https://cdn.shopify.com/s/files/1/0429/0704/1958/files/subujejodezimizibaganute.pdf
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/discuss_multilingualism_as_a_resource.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/in_christ_alone_owl_city_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/fojowewukonanetozuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/nugisonifujutu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/2010_vw_jetta_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/mapa_mundi_para_pintar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36283751979.pdf
    • https://cdn.shopify.com/s/files/1/0440/3966/7877/files/kuxumudefanumosamiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/basketball_agility_ladder_drills.pdf
    • https://cdn.shopify.com/s/files/1/0439/5089/9368/files/96702375077.pdf
    • https://cdn.shopify.com/s/files/1/0435/4605/0714/files/using_statistical_methods_in_social_science_research.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_off00004548.bin
d4869fde4c8cd678c11c597268822baf3b6ce605c14b23ce334aeb7d12d01b2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4548 5428 bytes
font_01_sfnt_off000057b3.bin
f3d50a908e8717c69bc3fd96ce7955efae6f6061569752c24cd1fa5f7bf1c8b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B3 9008 bytes

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