Malicious PDF — malware analysis report

Static analysis result for SHA-256 063dd23e29edb5bd…

MALICIOUS

PDF

46.3 KB Created: 2020-08-23 11:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9bbe8c07495559933942d7f518b60a7 SHA-1: 29040dbf5ac15a2f60999fbde5e678ff176cded2 SHA-256: 063dd23e29edb5bd936c8e0c240ffdb9aba7280441c8af746cd01b0de93caf2b
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to a known malicious redirector, ttraff.com, which is designed to obscure the final destination. The document body, though heavily obfuscated, contains references to translation and includes the malicious URL, suggesting a lure for phishing or malware delivery. The presence of numerous shopify.com links, while mostly benign, is characteristic of SEO link farm techniques used to boost search engine rankings for malicious sites.

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=google+spanish+english+translator
    • http://files.eventprosplus.com/uploads/1/3/2/3/132302960/pubufedebobazupifi.pdf
    • http://sejavubis.creativedentaldesignsaz.com/uploads/1/3/1/6/131636725/votadigojuxisejoxupa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/5323/6902/files/apprendre_l_arabe_dbutant.pdf
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/vinemanufupokiminawobed.pdf
    • https://cdn.shopify.com/s/files/1/0429/0864/7580/files/wasigaragesodiwevuli.pdf
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/majis.pdf
    • https://cdn.shopify.com/s/files/1/0434/0609/8597/files/fur_elise_piano_sheet_music_easy.pdf
    • https://cdn.shopify.com/s/files/1/0438/1304/4386/files/kingmaker_barbarian_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/0171/5622/files/96614157813.pdf
    • https://cdn.shopify.com/s/files/1/0464/7855/7352/files/zutawitebosedaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/to_autumn_poem_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0434/2077/8653/files/17207444038.pdf
    • https://cdn.shopify.com/s/files/1/0434/8782/1981/files/aviation_week_and_space_technology_magazine.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006be6.bin
3d3ca3d066027f67d67422b580fcc60f3d97c3f0ba7321037673eb85b17e1f76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE6 4900 bytes
font_01_sfnt_off00007c83.bin
f6a2738681c3b65e5d02eb50771792d767b510eeb6aeb98c17726e7a4b68f358		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C83 9908 bytes
font_02_sfnt_off00009e6c.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E6C 4324 bytes

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