Malicious PDF — malware analysis report

Static analysis result for SHA-256 5046b0c1e7607355…

MALICIOUS

PDF

43.4 KB Created: 2020-08-23 05:33:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b4049d2b7eda2eb55ca9900e496a374 SHA-1: 895394a826aa4b183b63d22d6fb522a1b8440072 SHA-256: 5046b0c1e76073558199e1de85549b9dfcdc91a11285c1badf52e8ab71fc0579
152 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, designed to appear as a legitimate "Jupiter dynamic bond factsheet". The primary link, however, redirects to malicious infrastructure at `ttraff.com`. This indicates a phishing or redirection attack aiming to lead the user to a malicious site.

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=jupiter+dynamic+bond+factsheet
    • http://files.racerengineering.com/uploads/1/3/0/7/130775665/a9009f5f2eabad.pdf
    • http://files.vitalnutritioncapecod.com/uploads/1/3/0/9/130969356/gunomemupe_nowinod.pdf
    • http://files.osukappaphilambda.org/uploads/1/3/1/4/131437236/94326e32.pdf
    • http://kixinu.hypnowellbeing.co.nz/uploads/1/3/0/7/130776716/ac97cfd2c02.pdf
    • http://files.ritahogan.net/uploads/1/3/2/8/132815123/kixafe.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8871/files/sopijulotil.pdf
    • https://cdn.shopify.com/s/files/1/0434/1124/3164/files/bunum.pdf
    • https://cdn.shopify.com/s/files/1/0439/4467/3448/files/ajax_php_contact_form_with_validation.pdf
    • https://cdn.shopify.com/s/files/1/0435/5827/3183/files/physical_exam_and_health_assessment_jarvis.pdf
    • https://cdn.shopify.com/s/files/1/0462/6684/3290/files/cardiovascular_system_review_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/8230/7989/files/comment_fusionner_des_documents_sur_mac.pdf
    • https://cdn.shopify.com/s/files/1/0437/0422/1849/files/56417498750.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/asymptotic_expansions_of_integrals_bleistein.pdf
    • https://cdn.shopify.com/s/files/1/0430/3811/3955/files/70328451505.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/ziwaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7548/files/gomuzowebotilebiwexudu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0523/files/31884777749.pdf
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/suzarafefibenukuzobera.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_off00006ae2.bin
5bd95c45c1efd5bbc955a5b73807eba6e59106cb92272cfbede9a6cf67e04231		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE2 5592 bytes
font_01_sfnt_off00007dbc.bin
074aad547bb15a507d747a05157a632fe5a0100d2e9396fba4d59f429dca4f31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBC 10188 bytes

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