Malicious PDF — malware analysis report

Static analysis result for SHA-256 16d03303cf714ef4…

MALICIOUS

PDF

42.5 KB Created: 2020-08-19 01:27:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 701af53fba2c8de233d67c02f23b52c0 SHA-1: 0979efeca6b38ad9cf4189bfcb8ef162057e357b SHA-256: 16d03303cf714ef413e81921528160e9d7d5b88a599ad2f38e7c084af8ac441f
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious infrastructure. The primary redirector URL identified is https://ttraff.ru/pify?keyword=proyectos+energias+renovables+pdf. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lead users to malicious content, likely for phishing or malware distribution.

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.ru/pify?keyword=proyectos+energias+renovables+pdf
    • http://files.jamesonbrown.com/uploads/1/3/2/3/132303245/bepexirarenaw-kugadot-kusuwife.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/muzeparilejodumosopedo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5897/8207/files/vegan_bodybuilding_meal_plan.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/nizavajagifetazibubifed.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/sondagem_vesical_de_alivio.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/febudiwovasimixeminuseb.pdf
    • https://cdn.shopify.com/s/files/1/0433/5583/2471/files/english_hd_audio_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/xivovonikofinulapuku.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/identifying_story_elements_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/4076/7132/files/cardi_b_bodak_yellow_lyrics_video.pdf
    • https://cdn.shopify.com/s/files/1/0430/3273/9989/files/kaldarshak_calendar_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/7573/7502/files/32131628834.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_off00006542.bin
9ccebc61362fb6c025808ec539ac75130b6d029a79313e65aa650fea2524f950
pdf-font-stream PDF embedded font (sfnt) at offset 0x6542 5628 bytes
font_01_sfnt_off00007878.bin
e1af165cca98faffb024d8d52a3de89d2f0f33885f64d5a4bf21dbd5da25b574
pdf-font-stream PDF embedded font (sfnt) at offset 0x7878 10892 bytes