Malicious PDF — malware analysis report

Static analysis result for SHA-256 150e43e0cd34c2c6…

MALICIOUS

PDF

47.7 KB Created: 2020-08-24 23:32:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db3de88de685f3356f5ff9345389d71d SHA-1: 786a8b93ff50af34974db95575caf0047f119049 SHA-256: 150e43e0cd34c2c602caeedae534120e3eb874a2e9d367565191f2dd36449c69
154 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, many pointing to Shopify-hosted PDF files, suggesting a link farm or SEO manipulation tactic. Crucially, one URL, https://ttraff.com/pify?keyword=shepard+smith+reporting+fox, is identified as a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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=shepard+smith+reporting+fox
    • http://lelubado.vineinvesting.com/uploads/1/3/2/6/132682883/5066055.pdf
    • http://marobalig.trinityvt.org/uploads/1/3/1/4/131406390/volikimejoza-lubazoj-tuvekilawi-pojatakuse.pdf
    • http://files.nicoleowencoaching.com/uploads/1/3/0/7/130739595/botokutavixejix_pobem_gorekenefewisat.pdf
    • http://files.harborbaychiro.com/uploads/1/3/0/8/130813866/1592236.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/8510/2237/files/kuwomugikenomijinotaxa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5511/9512/files/viludikivusosem.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/behringer_x32_compact_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/6952/1568/files/d_d_5e_free_adventures.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/60703306393.pdf
    • https://cdn.shopify.com/s/files/1/0429/3669/6999/files/74401143726.pdf
    • https://cdn.shopify.com/s/files/1/0440/9108/0869/files/95081868999.pdf
    • https://cdn.shopify.com/s/files/1/0434/6675/2164/files/turufufu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/30243314190.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/petapadajawodagagatefadez.pdf
    • https://cdn.shopify.com/s/files/1/0434/0042/9731/files/nabedavonuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7192/2591/files/assamese_bihu_video_songs_free_2014.pdf
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/unisa_application_form_download_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/carcinoma_de_clulas_escamosas_da_pele.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bd6.bin
25cc5ce34b713b1329996718e2fcfa188c10f399ddcd56766aec93320ab54918		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD6 5596 bytes
font_01_sfnt_off00008ebf.bin
27db1927719bf722d10dcae5f7f67954eb04dbdc346f4bdbf26ac878df6cb4cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EBF 10264 bytes

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