Malicious PDF — malware analysis report

Static analysis result for SHA-256 7078607f5165852e…

MALICIOUS

PDF

53.0 KB Created: 2020-08-09 21:50:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1eced62ba12b88c67830c8def149abe SHA-1: 983abc934b949dd55b9dc0b6870c08f3df0df2c2 SHA-256: 7078607f5165852e364413fafed5894f1ac5008ca2df3a1cc41bd025f5eed7b6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'keto reset diet free pdf'. The presence of a malicious redirector and a large number of external links suggests an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=keto+reset+diet+free+pdf
    • http://files.akesbespokewoodwork.com/uploads/1/3/1/4/131437276/197498.pdf
    • http://nokebi.smarttc.co.uk/uploads/1/3/0/7/130775868/sovizosireseti.pdf
    • http://vomaronig.ratonschools.com/uploads/1/3/1/4/131407995/jaxudavudenoxixele.pdf
    • http://files.hayesvilleumc.org/uploads/1/3/1/3/131379706/sinowug.pdf
    • http://files.noiinsw.com/uploads/1/3/2/6/132683088/ximitazugavobom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/rafoxupolixovoluxavub.pdf
    • https://cdn.shopify.com/s/files/1/0438/3804/6365/files/alter_ego_a1_teacher_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/83001940966.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/7457779925.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0924/files/huduma_number_registration_form.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/79529867414.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/romiket.pdf
    • https://cdn.shopify.com/s/files/1/0428/3265/8588/files/nuwitod.pdf
    • https://cdn.shopify.com/s/files/1/0440/0673/6037/files/61435445750.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8811/files/jemunus.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/2002/files/environmental_issues_in_the_philippines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0439/0617/1048/files/51529436587.pdf
    • https://cdn.shopify.com/s/files/1/0435/3972/6487/files/english_grammar_in_urdu.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a0f.bin
d4f8605fa8c96a77a2a3a733288e93407d1719bc0fc3d1f9b33882d069c37e02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0F 4760 bytes
font_01_sfnt_off00007a51.bin
85a8a64fc7401656b973423dc16ff59c5809f93ea5156c05d782561a6c9b8a1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A51 3712 bytes
font_02_sfnt_off00008918.bin
f10f81c9099ca617302811d9a2cae0d86c41c946c4d053eba13eabe34d95c171		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8918 11372 bytes
font_03_sfnt_off0000b013.bin
3f3051fc2b34b2771c3377b14eace4639085d8870b385eaa3ebac19dea95ca2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB013 16340 bytes

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